So, only gog is as expensive for devs on PC as Steam.
And of course they would ask as much as steam would, if they were in valve’s position.
But they aren’t and valve is actively using their position of power to keep them there (besides the stores being worse, feature wise, but a lot of people would ignore that for 20% cheaper games on epic, for example).
The only distributor that has lower fees is Epic.
If you believe, in a Steamless world, Epic wouldn’t raise their fee to 30%, I have a Half-Life 3 to sell you.
And Microsoft and itch.io.
So, only gog is as expensive for devs on PC as Steam.
And of course they would ask as much as steam would, if they were in valve’s position. But they aren’t and valve is actively using their position of power to keep them there (besides the stores being worse, feature wise, but a lot of people would ignore that for 20% cheaper games on epic, for example).
Itch.io doesn’t provide anywhere near the service Valve does, it would be ludicrous for them to charge the same.