It is not really a free market, if you can just choose between iOS and Android. And Google even pays billions to Apple.Many of us CHOOSE Apple because of their ecosystem. It’s called a free market. If people don’t want it they are FREE to choose something else.
What is "free" about not being able to do what you want with your own very expensive phone? Imagine you buy a car, but the car company also owns gas stations and only allows you to use their own gas stations. Would that be your idea or free market?