Last year, they all came crawlin' back to Steam, and this year was another strong one for Valve.
From the opinion piece:
Last year, I pointed out how many big publishers came crawlin' back to Steam after trying their own things: EA, Activision, Microsoft. This year, for the first time ever, two Blizzard games released on Steam: Overwatch and Diablo 4.
...another huge win is innovation and support for FOSS. Proton and Wine enhancements by Valve is allowing Linux to chip away some of the gaming armor from windows.
Some games simply run better on Linux despite the need for emulation layer.