David Has Bought a Billboard: Why Challenger Brands Keep Throwing Stones at Market Leaders

Water-purifier advertising has traditionally relied upon anxious mothers, invisible germs and glasses held suspiciously against the light.

Kent RO chose advertising violence. Through advertisements and influencer-led content, Kent allegedly attacked the central promise of Urban Company’s Native purifiers: a two-year filter life and two years without servicing. According to Urban Company, the campaign called the proposition a “marketing gimmick” and suggested that using the purifiers could be “unsafe” and “risky”.

Urban Company responded with the corporate equivalent of installing a legal filter. It filed a defamation and product-disparagement suit before the Delhi High Court on August 11. At the August 12 hearing, Kent agreed to remove the disputed advertisements and refrain from running similar content that disparaged Urban Company. The court’s reportedly order became public on August 22.

Two water-purifier companies entered an ad war. The first thing removed was not an impurity. It was the advertisement.

When Goliath Throws the Stone

The Kent-Urban Company battle bends the classic challenger-brand script.

Kent is the established purifier brand. Urban Company is the newer entrant attempting to rewrite category economics through filters that allegedly last longer and require less servicing.

Here, Goliath appears to have picked up the stone. That makes the confrontation more revealing. An incumbent usually ignores a small competitor until that competitor begins attacking something important. Native’s two-year proposition does not merely offer convenience. It challenges the servicing and filter-replacement cycle around which much of the water-purifier category has traditionally operated.

Kent’s attack therefore tells us something that no market-share slide can communicate as dramatically. The challenger has been noticed.

Elsewhere in Indian homecare, David has been considerably less patient. Beco has marched towards Hindustan Unilever carrying lab reports, billboards, videos, influencers and what appears to be a well-prepared lawyer.

Its #WarOnWhatsHidden campaign names Surf Excel Matic Liquid and Vim Dishwash Gel while questioning the ingredients used in them. Beco says independent testing by an NABL-accredited laboratory detected BIT and LAS in the tested products and points to published material associating the ingredients with possible irritation or allergic reactions.

HUL reportedly disputes the way Beco has connected the presence of those ingredients with the safety of finished products under normal use. It has taken Beco to the Delhi High Court, alleging that the campaign is untrue, misleading and disparaging. The matter remains before the court.

Beco could have spoken vaguely about “ordinary cleaners” and hidden the rival packets behind suspiciously familiar colours. It named Surf Excel and Vim. David has learnt that a stone travels farther when Goliath’s name is printed on it.

Why Challengers Need Enemies

A small brand suffers from an attention problem before it suffers from a persuasion problem.

Consumers already understand what Surf Excel, Vim, Kent, Apple, Coca-Cola and Gillette represent. The challenger must first earn enough mental space to explain itself. Picking a fight solves that problem quickly. The leader supplies the category context, dramatic tension and audience. The challenger borrows all three.

Beco does not need to explain the scale of the homecare establishment it is challenging. HUL’s brands provide the scale. Beco needs only to enter the frame as their interrogator.

Marketing professor Ashita Aggarwal has neatly captured the emotional attraction of this strategy: “Our love for challenger brands is eternal. Challenger brands bring out the hero instinct in you.”

That hero instinct matters. Consumers do not merely watch a product comparison. They are invited to support the insurgent, question the establishment and demonstrate that they are too intelligent to accept whatever the giant puts on the shelf. But Aggarwal’s larger warning is equally important. A challenger cannot build its identity entirely from the incumbent’s name. The attack must reveal a meaningful difference, not merely a hunger for attention. Otherwise, David becomes famous as the fellow standing next to Goliath.

Nirma Changed the Battlefield

Nirma remains India’s great challenger-brand lesson, although it did not need to put Surf on trial in every advertisement.

Karsanbhai Patel attacked the economics of the detergent category. Surf occupied the premium end of the market. Nirma offered millions of households a dramatically cheaper way to buy packaged detergent, then hammered its name into popular memory through an almost indestructible jingle. It challenged the leader by changing who could afford to enter the category. That is a much harder blow than a clever insult.

Hindustan Lever eventually responded by building Wheel for the mass segment. Nirma had forced the giant to create a different weapon for a battlefield the challenger had redrawn.

Sebamed chose the more direct route in 2021. It compared the pH levels of its cleansing bar with HUL brands such as Dove, Lux and Pears, at one point placing soaps beside Rin detergent on a pH scale. “Film stars kee nahi, science kee suno,” the campaign declared.

Suddenly, a chemistry term previously trapped inside school textbooks entered bathroom conversations. The campaign succeeded spectacularly at making pH famous. It gave Sebamed a scientific territory and forced HUL to respond. But the courts objected to parts of the execution, including the suggestion that HUL’s soaps were equivalent to detergent. Sebamed subsequently lost an appeal concerning the campaign.

Sebamed won the conversation. Whether it converted enough of that conversation into habitual purchase is the more difficult question.

When the Joke Advertises the Giant

In 2024, boAt told Indian consumers: “Don’t be a fanboy, be a boAthead.”

The target was Apple. The campaign played with Apple’s language, product naming and intensely loyal customer base while asking consumers to give an Indian alternative a chance.

It attracted attention. It also exposed the central danger of challenger advertising.

Many Apple customers did not consider boAt and AirPods direct substitutes. Mocking “fanboys” risked insulting the very people the advertisement wanted to convert. Some viewers also argued that boAt needed to compete through research, products and experience before borrowing Apple’s “Think Different” mythology.

The giant received another round of free publicity. The challenger received engagement. Those are not automatically the same as sales.

Samsung discovered an even funnier danger. It mocked Apple for removing the charger from the iPhone box, then reportedly removed its own advertisement as it prepared to stop supplying chargers with some Galaxy phones. It had thrown a stone at a decision it was about to imitate. Goliath did not need to retaliate. Time did it for him.

The Davids Who Made It Work

Avis produced the most famous declaration of corporate inferiority in advertising history: “We’re No. 2. We try harder.”

The rental-car company converted its position behind Hertz into proof of greater effort. Empty fuel tanks, dirty cars and indifferent service became luxuries that the number-two company supposedly could not afford. Avis made weakness feel like accountability.

Pepsi used a different weapon against Coca-Cola. The Pepsi Challenge placed unmarked cups in front of consumers and turned preference into public theatre. Pepsi never permanently evicted Coca-Cola from the top of the cola world, but it established itself as the rival capable of making Coke look over its shoulder.

Dollar Shave Club later reportedly attacked the inflated price, technological theatre and retail inconvenience surrounding the razor business. Its irreverent 2012 launch video brought 12,000 orders within 48 hours. Four years later, Unilever bought the company for a reported $1 billion.

It worked because the joke sat upon a business-model difference. Dollar Shave Club did not merely mock expensive razors. It delivered cheaper blades through a subscription. The entertainment opened the door. The proposition walked through it.

The Stone Must Contain Proof

Beco understands this. That is why its campaign foregrounds laboratory tests, ingredient names, reports and QR codes rather than depending entirely upon cheeky copy.

Yet scientific language does not automatically settle a scientific argument. Detecting an ingredient and demonstrating that a finished product causes harm under ordinary usage are different propositions. That distinction sits at the heart of HUL’s challenge. The court will decide how far Beco’s evidence supports its advertising.

The same principle applies to Kent.

A rival may interrogate Urban Company’s two-year promise. Consumers deserve to know how water quality, usage and local conditions affect filter life. But calling a competing purifier unsafe requires evidence strong enough to survive more than an influencer reel.

Comparative advertising allows brands to say, “We are better.” It becomes combustible when they say, “You may be in danger.” The best challenger campaigns use the leader to make their own difference visible. The weakest use the leader as a substitute for having a difference.

David gets only one stone. If it contains proof, a product advantage and a reason to switch, it can change the market. If it contains only mockery, Goliath may pick it up, hand it to a lawyer and return it with paperwork.