I doubt continuing to be a game store on Windows will be profitable indefinitely, considering Microsoft is trying to push their own store and close down Windows gaming for themselves.
Now we have the Microsoft Store, whille substantially better, Windows hasn't even attempted to close down the system and yet again everyone is claiming they will. They aren't, and they won't, the Microsoft Store still hasn't urserped Azure or regular Windows keys in sales or profit. So why would any company close off their system potentially losing more sales on Windows keys, it just makes no sense.
Can we please stop touting this bullshit?
"Someone opposed the thing and it never happened."
We don't have an alternative reality to actually verify why it never happened.
Valve has been pushing for Linux support in case they need it as fallback (see: Proton, Steam Machines, etc.)
Atleast at Valve there is a certain amount of fear this might happen.