What? did you just completely ignore the context of the comment you quoted?
GoG choosing to cut down on cloud storage is a business decision they made.
This is not only completely ignorant of the work Valve did to make gaming on linux possible, the sheer amount of code they have contributed to fixing AMD's drivers as an example, but its also just flat out wrong. Valve is working with Crossover on Proton, and has contributed significant code. This is all open source, you can just go read the commits and see how much is coming from Valve.
Going through a weird stuff? No option to share games with family?
This tells me you've never actually tried to use Steam for anything, to be this ignorant.
I guess this ignores the small devs that can do it?
they are not a defacto monopoly. No company that has 4+ competitors, funded by billion dollar corporations, has a monopoly. That's like saying Wal Mart has a monopoly on all retail.
It's also NOTHING like the App store, because windows allows you to install any store you want.
Nu English at work again. Just because Valve is successful does not mean they have a monopoly, and people who abuse language like this deserve lashing. Stop it.
GOG had to cut costs, because their market share is too small to offer large storage. Because Steam is having overhelming presence, as a monopoly.
"This is not only completely ignorant of the work Valve did to make gaming on linux possible"
lol. Gaming was always possible on Linux, way before Valve was involved. I've been there, and I was doing that.
"the sheer amount of code they have contributed to fixing AMD's drivers as an example"
They didn't thought? CodeWeavers did the heavy lifting, and last time I was checking commits they were mostly from CW employees. Sure, some from valve related guys, but really not that much.
"Valve is working with Crossover on Proton,"
hahaha, crossover, right?

nope. Again. those guys are codeweavers, they did wine, crosover, and proton. And AMD gpu fixes.
"This is all open source, you can just go read the commits and see how much is coming from Valve."
I did. Did you? lol, please, do it again.
"Going through a weird stuff? No option to share games with family?"
"This tells me you've never actually tried to use Steam for anything, to be this ignorant."
Until this year September update there were no solid way to do so. Family share was an utter joke, where only one user cold have steam client in offline mode. From only this September we have Steam Family, where there are less limitations, but are way better - but not remotely as good as just having a game installer files.
Ignorant? hahaha, tell me you never tried to use family share without telling you never tried to use family share
"they are not a defacto monopoly. No company that has 4+ competitors, funded by billion dollar corporations, has a monopoly. That's like saying Wal Mart has a monopoly on all retail."
Oh, does Wal Mart control 80% retail market in US? no? just measly 11%? Great comparison, man. And shows how incorrect view of the actual market coverage by steam you have. Number of competitors does not matter, if they are only a background noise. This means those 4+ competitors are fighting for 20% of the market, so none of them even catching 5%. This is really simple, if a developer HAVE to use a single monopolistic platform to have a chance to make a profit and to get to the large number of potential customers, THEN it is a monopoly. Be that Apple (revenue per apple device more than 10 times revenue on any other mobile?), be that Steam.