All I see is if, if and if. Apple does not operate in a duopoly. The cell phone market is healthy and rife with competition. Anyone can enter the market. All it takes are brains, muscle and financing.It's not about the minibar. Minibar usage is optional. Having a roof over your head isn't. And if you're the only one (or two) landlords controlling the entire housing stock in the market or country, prepare for government rent controls and non-discrimination regulation faster than you can say "c®ook".
It's not "use" of property, really - since the "use" of functionality in Apple's iOS devices costs Apple ...nothing. Zero. Once the hardware device has been purchased by the consumer.
And if you believe they have "every right": no, they shouldn't have it. Apple's rights should be curtailed and/or stripped of them, if they the operate in a duopoly of operating systems and are not providing "use" or access to their platform on reasonable terms.
In the meantime apple does have every right and you have every right to not buy their products.