Chrome has many convenience features, especially for users of other Google services, that effectively lock you into it. On top of that, some Google websites don't work all that well in other browsers (except where they are forced to play along - e.g. Safari on iOS), either because they use features that Chrome implements first, or because they specifically check which user agent you're using.

(It should also be noted that this latter bit is not something new to Google, either. I remember how Opera complained about them doing exactly that with GMail back in... 2009, I think?)

Does it actually align? Mozilla also polices their extension store for content that disagrees with their politics, breaching the necessary neutrality of a browser: https://reclaimthenet.org/firefox-rejects-free-speech-bans-f...

Chrome (aside from the ad company spying) has better security than any other browser, Firefox included, by a substantial margin.