I seem to recall Origin initially reserving the right to revoke your license to play games you purchased after a few years of inactivity.

AFAIK Steam has this too. The Subscriber Agreement clearly states that you're not guaranteed continued, free access to Steam. If they decided they wanted to charge you to access games you already bought, they could.

Classic EA.

"Oh, you haven't played this game in a while. You should pay us again if you wanna play it again. Give you a sense of pride and accomplishment!"

(reference for those who haven't seen it https://www.reddit.com/r/StarWarsBattlefront/comments/7cff0b... )