I’m sure when Steam started it was the same way and with less developers than Epic. Epic have a huge user base, from hobbyist to AAA. We could totally do this and in about a year it could become the go to for early access and new games with Unreal Engine.
It may not be enough, but combine with other avenues like Amazon DD and GOG we can stop feeding the beast. It scary to see that much power over the industry to one corporation.
Unity would probably follow soon. The industry is always changing and regardless of the change, a good game will drive sales no matter where it is sold.