Yeah, you’re just flat wrong. MAYBE GoG has the least worst licensing around. A decent number of titles I’ve seen on there don’t have DRM. Also itch.io and direct patreon/kickstarter purchases too. Any other platform, and unless specifically stated, you are just borrowing the game until they decide otherwise.

He’ll, even physical purchases don’t guarantee a game forever, the publisher or dev may turn off a server that just straight kills it.