It's funny how Steam has had like, what, 5 competitors in this space (Ubisoft whatever, Origin/EA whatever, Battle.net, GOG, Epic Games), and none have even got close to Steam marketshare or feature set.

Ubisoft and EA have more or less surrendered. Battle.net is distinct enough with a group of exclusives including WoW to keep going. GoG is kept alive by its one single USP, and its launcher isn't even relevant to that, so it's just there, not really doing anything. Epic is seemingly trying to compete against Steam, but seems blind to the reasons why people like Steam.