Those other stores only made sense because they offered a lower commission than Steam. If you already have the lower commission, you don't need the ability to

Those other stores only made sense because they offered a lower commission than Steam. If you already have the lower commission, you don't need the ability to print keys. Instead of going through a bundle, which yielded about 50c per copy then sunk your later sales since tens of thousands of keys ended up on G2A etc, just sell your game for 95% off - same result (mass appeal, even to people who are not really interested in your game), doesn't impact your future sales, and probably yields more revenue. However, the one gap I can see is from Kickstarters - backers need some method to access the game on Epic Store.