Its really time for Steam to respond. Eventually the Epic store will match the features of Steam, and open more broadly to upper-tier Indie games. What will be left on Steam? There has already been a notable lack of launches this year.
Steam needs to halve its 30% commission to 15% for all games, and increase the Steam Direct fee to $2,000 to increase average quality. Developers aren't just leaving because of the high commission, they are leaving because of the deluge of junk launching on the store daily.