One thing that made Microsoft successful was a strategy called embrace, extend and extinguish ("EEE"). This is what they tried to do to Java back when it was believed that Java was a threat to Microsoft's platform monopoly since the Java mantra was "write once, run anywhere". Microsoft added all these proprietary extensions after licensing Java.
Well, Microsoft basically did the same thing to knock Netscape off its throne. It was the whole basis for the antitrust suit. This was aimed at Java too because Java introduced applets. MS added ActiveX controls. MS did succeed at killing Netscape but the antitrust suit (and probably the victory over Java and Netscape) led us to more than a decade of hell with IE6 compatibility as MS basically abandoned their browser.
Google did something in the mid-2000s that nobody thought was possible: they created a browser and got mass adoption without having a platform. People willingly downloaded it. And when it was first released, it was magical. They pioneered one process per tab. At the time, Netscape had faded into Fireforx and it was pretty bad. Your entire browser could hang since it was one thread per tab and it absolutely did hang.
At this time and really through the mid-2010s, Google was a good actor with Chrome (IMHO). Chrome was secure, stable and a pretty open platform. Unfortunately for Google, this became a problem as use of ad blockers became more widespread. Where Chrome once became a posterchild for standards support, other parts of Google weren't so... open. Youtube at this time started playing games when people were using non-Chrome browsers.
Anyone who uses Chrome knows that the anti-ad blocking really stepped up. Changes to what extensions are allowed to do killed uBlock Origin. Google has risked regulatory wrath by special-casing their own user-tracking and ad cookies while blocking other third-party cookies. They also tried to phase out third-party cookies in favor of what sounded like a first-party only tracking (FLoC? I think it was called?).
Another issue is that Google always wanted people to be logged in with search and for the longest time they weren't. Well, people basically opted in to this by using Chrome and using a Google account. I used to really like the Google account syncing with Chrome. A lot of that for me has been replaced by using a password manager.
My point is I once was a huge Chrome fan and now I really want there to be an alternative. I trust Apple with Safari/iOS more than Google with Chrome/Android at this point. YMMV. I find myself using Firefox a lot (again).
Anyway, this whole messing with user tracking and ads I think could be Chrome's downfall and might invite regulatory scrutiny.