Steam has seemed perfectly fine with basically no real competition. For the most part the consensus seems to be that users only leave Steam when they have too not because they want too.
The iOS App Store is fine with no competition (for users).
How do users loose out from payment competition on iOS? I can't think of how I loose out on anything, in reality an app trying to convince me to use their payment option instead of iOS saves me money because I don't want to fall victim to dark practices when I want to cancel.
Sure developers get a 30% cut but that seems to be the norm in the industry, that is what Steam charges. Developers can't just not tell me a yearly subscription is about to charge, make me call to cancel, but as a USER that is a good thing.
If a developer tries to push me outside of the App Store to pay them, once again that is the Developer making the choice for me.
