That’s on developers for not putting their games on other platforms, Valve do not prevent you from doing so. If they went crazy tomorrow, people can just jump ship.
I swear the only games that could never be on another store would be Valve’s own. It’s really not their fault that other platforms are so bad or niche.
Like realistically what should they do to not be seen as gatekeepers? Become worse to scare developers and customers onto other platforms?
It’s not their fault they’re gatekeepers, it’s a symptom of their success. The biggest platform will have a much greater pull inherently, and it should be their responsibility to act fairly because of that position. Thankfully they seem to take that seriously so far. We can only hope it stays that way.