You try to use that as proof, yet the European Union just didn’t check what’s happening in that market at all!
Funny how nobody other random commentators on the internet and their “Trust me, bro” line of evidence sees Steam as a monopoly and you people conveniently keep forgetting that the biggest PC games – Roblox, Minecraft, and Fortnite – are not on Steam and the combined active user base of those three games dwarf the active Steam user base. So the gatekeeper list by the EU does not count. Great. Where are the antitrust rulings on Steam by the USA, the UK, Japan, Brazil, Kenya, or any other regulatory body on the planet?