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.
That will be a shame for already purchased Steam libraries, but because the PC is an open platform and their “monopoly” is drastically overstated, it might just be the opportunity for GOG to rise up. Or maybe even Epic, if it actually bothers doing better. Valve can’t, and won’t ever be able to completely control where people buy PC games.
You know, as opposed to consoles like Playstation, which, if you don’t like how they are doing business, you just gotta deal with it.