Originally Posted by delerious
If it was about the dev saving 17% on fees, I have to wonder why they aren't selling the games themselves and saving all the fees.
Because it will cost more for them to make their own stores/launchers and it rarely works out. The only successful store/launchers I can think of for PC is Steam and maybe Origin.
Putting their games on a store that will guarantee good sales (at least for AAA titles) but they have to pay a 30% fee is a lot safer for them. Even if they will potentially make less money from it. A pretty good example of this would be GTA V as it's sold on Steam and Rockstars own store/launcher.
SteamSpy estimates there are up to 10,000,000 owners for GTA V on just Steam with a further 2,500,000 estimated sold through Rockstars own store/launcher. If we work on an average of $35/copy on Steam and $45/copy on Rockstars platform, that's $245,000,000 after fees from Steam and $112,500,000 from their own platform. Even after fees, it's far more profitable to just use Steam.
Epic Games is paying developers/publisher a lot of money to get the 1 year exclusive deal.