While I agree that the EGS experience is bad, I don't think this is related to the cut. It's just an immature store backed by questionable software engineering

While I agree that the EGS experience is bad, I don't think this is related to the cut. It's just an immature store backed by questionable software engineering and design. There are other stores with low % cuts that don't have these issues. Itch is very cheap, for example, and developers love it. Apparently Itch is important enough that Apple and Epic kept bringing it up over and over in court. I don't know their current %s, but Humble's game sales platform (that is, for non-bundle game sales) definitely charged way less than 30% in the past.