Thought i responded to this, but oh well will do it again.
Epic, EA, Microsoft, sony, ubisoft all have a long history of poor worker conditions or anti-consumer practices.
Valve and gog have 20+ years of decent but not perfect history of worker and pro gamer practices.
The contention in this thread is from people who think valve cant be trusted because capitalism and those who say as long as they continue good behavior they’re a better choice than any of the others in the space. While epic has never shown this procommunity behavior.
Basically gog is valves only real competitor and since they dont support linux or provide many of the game featurss valve does for developers its no contest.
That is a dynamic rate by definition, not saying its perfect. But its available to any dev whos game hits those numbers.