Close, but the root is more nuanced. Once upon a time, Microsoft was talking about regulating "apps" on windows like Apple does for the iPhone. Valve saw the writing on the wall: a potential ban on violent or otherwise adult-themed games. So Valve started the steambox project. Get the games running on linux/WINE and they could tell Microsoft to push off. Years later, we have the steamdeck as a revolutionary product and linux is the go-to OS for portable gaming.