Comment by keyringlight

Besides Fortnite (which is a big hit on mobile/consoles) all those examples hit their stride before steam opened to third parties or early in that period. Others like COD or Minecraft may have started on PC but migrated their main focus to other platforms too.

What stands out to me is that while most studios accept that they've got to pay their tithe to valve in order to succeed on PC, for many it seems to begrudgingly so and where they have the capability they investigate using their own or alternative channels to get a better rate. It's an interesting parallel to Valve's moan around 15 years or so that Microsoft could E.E.E. PC gaming and the linux direction was hedging against that.