There a lot of cross platform games. Beyond that, what you’re saying makes little sense.
The post:
Space Marine 2’s Epic Games client on Steam is for crossplay, confirms publisher
The comment I’m replying to:
Then make the Epic version include Steam instead of vice-versa
My comment: I don’t think that’s possible because I don’t think Steam offers their services/a mini-client in the way you’re proposing.
I have expressed no want. The user I was originally responding to appears to want cross play not through Epic.
Are you misunderstanding me on purpose?