I think you may have accidentally misread my post, or maybe I didn't word it carefully enough (in which case I apologize for the confusion). I don't prefer Steam. As a consumer, on principle in most cases I refuse to buy from it.

Steam effectively punishes creators for not steering users towards their monopoly, and they have a ton of tools for user lock-in: Steam Input, Steam Workshop, etc... They may not be as egregious as Apple, but they are often pretty egregious in their own right.

In a normal market, having a diverse set of users across multiple platforms would be a good thing as a creator, it would give you security and give each platform less power over you. Steam uses their review system to punish smaller creators who have a diverse userbase, and it uses their response to cement its market dominance even more and to give itself more power over those creators and their players. I would argue this is bad for the market.

My bigger point here is that Apple advocates will sometimes point to Steam and say "they charge high fees too, what's the problem?" There's are multiple reasons that Steam is able to charge higher fees than most of its PC competitors and remain the dominant platform for PC games, some of them due to the way that it methodically weaponizes incentives for both players and creators against alternatives. Comparing Apple to Steam does not make me like Apple more.