Exclusivity is key to break the Steam monopoly, unfortunately. Right now, everyone's game libraries are effectively Steam libraries. So when people go to buy one more game... they go to Steam, naturally.
The best way to break that is to not sell games on Steam. Another way is what Epic is also doing, giving away free games to build up people's library on their store as well.
The best way to break that is to not sell games on Steam. Another way is what Epic is also doing, giving away free games to build up people's library on their store as well.