You are at work for usually 8-9 hours a day. Some games require so little attention you can play while at work. Like EVE Online mining could be optimised to only giving a control input a few times an hour. Isk/h would be shit, but it's not zero.

Sometimes I forget that I've left a game open overnight

Almost 4 hours if you only count weekdays. In other words, more than people should, debatably, have to work to survive.

I lean towards anti-work for the masses, but anyways, if that amount of time should be enough to survive-on; Does anything else, besides, unavoidably, sleep, ANY one thing, deserve that much of your time?

Honestly, I would bet they are having issues meeting demand, or AI demand is high-enough and pays enough to cause a supply issue, what with RAM prices and non-sensical gibberish I won't bother finding to have a second bit for that "and", right now. I was surprised to learn the GeForceNOW rates are still the-same-as-or-better than when I last looked-into it, a few years-ago.

EDIT: Math, verbiage to adjust to corrected figures, and another paragraph or two, Sorry.

Some people have jobs that involve gaming for more than 3 hours. This is going to actively affect how some people work.

Fuck Nvidia and fuck Ai