And Burger King has 100% of the Whopper market. That doesn't mean it has a monopoly on hamburgers.
You know, as much as anyone, this is just a dumb comparison.
Wish I could’ve used the signature of
@AppliedMicro, but I am on mobile haha.
If I were you, I’d read up on the difference between a perfect competition and monopoly/oligopoly.
Briefly, beef is beef, there is little differences between different beef suppliers, so a burger is mostly a burger, and there is very little difference between burgers. And there are plenty of suppliers of beef burgers, so it is easy to choose a store that fits either taste or price, if you are lucky you het a good price for a great burger. There is ‘perfect’ competition.
SmartphoneOSes are unique goods, there are practically only two suppliers/options. These two suppliers have a lot of power to steer the market. And so they do. So there is no real choice, it is the only alternative.
Adding to this, here I only consider from a consumer side, it is more complicated if you also include developers.