Businesses in general tend to get locked into mindsets that cause them to not be innovative in many areas of their operations. Some businesses like Kodak have failed to look ahead. One of the reasons that Google Panda had the effect that it did was because businesses focused on the short-term (keywords) instead of the long term (interesting fresh content).
One of the main reasons that Univac in the 1960s failed to outpace IBM in market share was because businesses were invested in punch cards and weren't interested in the technological superiority of the Univac system.
About the only thing that really succeeds in getting the corporate world's attention is when their user base begins to dwindle or when a disruptive technology acquires users at a faster rate of speed than the industry's long term participants.
My reason for saying this, is that I think that focusing on the user base is more likely to produce results than focusing on the industry providers.
I don't know whether the browser known as Brave will ever outpace Google Chrome (especially since it uses the same engine) but just as Google disrupted Yahoo and Altavista so also I think that disrupting the internet advertisement industry will begin with a newcomer and not with the entrenched players.
Added: I think that the advertising industry has demonstrated repeatedly that it cannot be trusted to keep the information which it gathers secret. Even if a company is trustworthy if it gets bought, the new parent company may exploit what was previously protected.