That's the thing. I don't WANT a browser that's actually different. The web is a duopoly between Apple and Google, and everything else is a second-class citizen. The era of an "open" web came and went, passing us by as capitalism took over. Firefox offers no meaningful freedom when all the content it's supposed to consume was designed by and for big companies targeting other big companies' products and customers.
Using Firefox introduces a lot of headaches and subjects you to frequent, meaningless UI updates that add partner extensions against your will and show you recommendations that I don't want to see... Mozilla is desperately trying to stay relevant and has introduced a lot more dark patterns than Chrome has, all while adding no value beyond some vague, lackluster appeal to a libre web... too little, too late.
Google, for all its faults, makes a darn good browser. The only downside is that they track my habits. So what? I'm not particularly exciting, and the only real cost I've noticed, beyond needing an ad blocker, is that my Google News feed gets cluttered with shit I don't care about derived from my browsing history. But other than that Chrome is just wonderfully simple and clean compared to the bloated Firefox (and its lookalike clones, Opera and Edge).