Sony have very, very few straight exclusivity deals these days, they have a super robust first party network. Nintendo and them are very comparable, in fact. Especially in that Nintendo works with more third parties or partially owned "second parties" than you'd think, since people presume anything using their IP is their game, even when it's not.

In any case, they're both as not-comparable, in that Epic games run on the same hardware and platform as Steam games, Linux compatibility aside. You don't have to pay any extra money to switch back and forth.

Epic legitimately hasn't done anything Nintendo, Sony or Microsoft haven't done on the regular. In fact, the current "boo, we hate non-Steam PC launchers" trend overlaps with the old "boo, we're pissed that former console exclusive X is going multiplatform", which was a surreal few years there.

Also, hell yeah, it's morally superior to give more of the money to the dev while charging the same up front to consumers. 100%. Every time. Epic is not doing it because they're nice, they're doing it to attract talent to their platform, which is exactly why you want competition between multiple storefronts instead of a monopoly. But that doesn't take it away from them, that's the better answer.