Steam is actually not that good as an application. It’s slow, it’s full of ads, the UI is complex …

But they are the Amazon of gaming : it’s a no brainer to buy games because you know you won’t get issues being reimbursed if it’s needed. Also SteamOS/Proton/Steam Deck are nice.

And EPIC managed to do worse than that.

I do feel GOG Galaxy could become a threat to Steam someday if they added official Linux support and a full screen version but last time I tried it it was pretty buggy.