Access to my main email account (outlook) is currently blocked because someone decided to try a password from some earlier leak and locked it. It can only be unlocked with SMS MFA, which I can’t use because I’m travelling abroad. There is no other way to do it. The other option they give you a form that only works if you don’t have MFA set up (it says so on the faq). I even asked someone to fill the form from my home computer so the location data matches earlier accesses, but didn’t work. You also can’t contact support without logging in. If I had lost/changed that phone number for any reason, I would lose access forever. Luckily I will be back home soon.
Microsoft having IE/Edge as the default browser has already cost them in the past. I don’t think Apple faced anything with Safari.
The problem today with chrome is how prevalent it is and how that influences the main product of the internet (advertising), which happens to be Google’s mais product too. Apple can at least make the argument that they make their money with the hardware, not the browser.
Either way, I think all OS should at least give you a list of browsers on first use to choose from.