It can be. Some of those keys might just taking advantage of regional pricing to buy keys in cheaper markets and resell them elsewhere, but some of them are purchased using stolen credit cards. Those actually cost the devs money from chargeback fees once the actually owner of the credit cards finds the fraudulent transactions. It’s hard to say how many of them are from stolen credit cards, and key-resellers try to stop it, but it still happens. This was back in 2019, but the Factorio devs had a couple blog posts talking about G2A:

Blog post saying G2A is worse than piracy

Follow up blog post where G2A reimburses them (at very bottom)

Apparently Framework did try to get AMD to use LPCAMM, but it just didn’t work from a signal integrity standpoint at the kind of speeds they need to run the memory at.