Right, but the Browser Wars are long dead and Google essentially won, then proceeded to build their business upon that outcome. It is surprising that they would opt to potentially lose their market share, (which is in the ballpark of 70% of users!), to reclaim the 10% they may be able to take from Mozilla.
** I want to add: I relatively recently watched the YouTuber Louis Rossman’s breakdown of u/Spez and his ridiculous handling of Reddit api pricing. The conclusion was basically that spez discarded his business sense to chase a vendetta. He wasn’t pricing to maximize Reddit’s profits but was pricing out Christian because the latter was more articulate about the issue at hand. I believe we’re seeing the same… that some exec within alphabet decided enough is enough and he is going to make sure adblocks die, regardless of what business sense tells us