It isn't. There are missing features on the Epic Store and it's nicer to have your games in one place. But if Epic can force Valve to lower their cut that will be a huge benefit to gamers and developers. And a lower cut will actually improve the chances of all games coming to Steam.
You mean poor struggling publisher like Ubisoft or Deepsilver?
Im also happy that Epic saved them. Now we only have to wait until the wealth trickles down and benefit us costumer.