Linux users, Steam Deck owners, VR players and those with Playstation or other non-standard controllers account for a fuckton of people. Easily in the millions to 10s of millions. If you don’t want to take advantage of those features, that’s your problem.
That’s a terribly wasteful way of thinking, why can’t we just download something once and have access to it forever? Steam allows local network installs and GoG has installers, what’s Epic excuse? Don’t forget, billion dollar company with 1000s of employees :)