This is the point that company breakups start to make a lot of sense.
When Google can do something that every one of it's users hates and none of us can do anything about it, they perhaps have too much market power.
I don't think this is remotely the case. Quite a few tech-savvy people I know (some of them software developers) use Chrome and mostly don't care about whatever Google does with it. I mention "manifest v3" and get a blank stare. I talk about advertising and ad blockers, and most people don't care, with some of them not even using ad blockers.
We really live in a bubble, here on HN. Most people think of privacy as some abstract thing that they have little control over, and are mostly fine with that. And some are even also fine with government erosion of privacy, in the name of "save the children" style arguments, and of corporate erosion of privacy, in the name of getting free stuff in exchange for their personal information.
It's a sad state of affairs. If most people really did care strongly about these sorts of issues, then I think it would be baffling why we haven't seen more change here -- after all, Firefox is a perfectly viable alternative to Chrome that very few people use. But the lack of change is no surprise: most people don't care.
The problem is that it isn't.
Do you know why Firefox managed to usurp IE6 in the first place? Because it won the adoption and appeal of tech enthusiasts and professionals. Mom and pop (read: the general population) switched to Firefox from IE6 because their tech nerd kids installed it for them, and the enterprise largely moved off of IE6 dependence because the general population moved off.
But the Firefox today is not the Firefox that defeated IE6. Mozilla steadily eroded and destroyed every single thing tech enthusiasts and professionals loved about Firefox, to the point it practically became just a Chrome ripoff. At that point, why bother? Chrome's right there, the real deal.
Not to mention Mozilla happily takes money from Google with no shame at all so their CEO can get her fat paychecks.
Firefox is not a viable alternative, Firefox is literally controlled opposition to pedantically argue Chrome is not a monopoly. Not even the Intel and AMD x86 duopoly is this blatant.
The original reason Google started the Chrome project was that the stagnation of IE6 was a barrier to implementing the web software they wanted to build. At least that's what they told us.
It seems this particular moment in history has been either forgotten or rewritten, judging from this thread and another one from yesterday.
Firefox got better dev tools and mozilla did random crap for a bit, meanwhile brain-dead devs insisted on continuing to use chrome. When the devs supported it, they started favoring the googlified things.
Honestly it's a terrible browser - we are back to the bad old IE days (almost).