So your argument here is "Apple isn't a monopoly. The Fairphone is always ab option"?
I'll keep pounding it in people's heads that 30 years ago Microsoft was hit over a web browser. It's a shame these days people would instead revert that and say "just download Netscape". If that worked, sure. But we have decades of market lock in showing it doesn't
Well they aren't a monopoly. They have what, ~50% market share?
MS had 97% market share and were abusing their market dominance to push others out. Apple isn't doing this, so there isn't a valid comparison here.
The flaw in the Microsoft comparison is that the web browser was installed in, what, 95% of actual computing devices? Remember phones and all of this other cool technology we have didn't exist.
Today there are many phones to choose from. You can buy an iPhone, or a Pixel, or a Galaxy. You can even buy a more open-source style phone with open-source style stores just like any other generic product feature. There is a marketplace and there is competition, it's just that, unlike what so many people here seem to desire, locked-down stores are what the market prefers.