I'm not quite sure what you mean by this, because it doesn't seem particularly relevant or important to this situation? It's the equivalent of asking if Google can sell Android apps on iOS.

The point is that every app store has arbitrary limitations placed on it by its operator. Valve takes a 30% cut which I can't circumvent, and guess what -- if I want to use a payment method which Valve doesn't support, I need to do it through a web interface and the user gets kicked out of the game.

Nothing is preventing Epic from doing in-app purchases in the game, they just don't like the margin they can achieve. And nothing is stopping them from doing the same micro transactions via their website or another interface.

All market places have limitations placed on them by the operators. If developers don't like them they should withhold their software from the platform.

Ah, I see. I agree with your point actually, I just didn't quite catch it from your initial comment.

I personally don't like the limitations (I disagree vehemently with a 30% cut), but that doesn't necessarily mean it's the government's job to step in. I think a lot of people are conflating "I disagree with this" and "it should literally be illegal".