Either vanish or become overpriced or something like that; become unavailable in some way, through enforced KYC to some absurd level, for example. This is why we still could benefit from a censorship-resistant layer for the normie DNS that could give full control to an authentic domain owner based on Nostr to fight this unfairness.
I've just learned what was happening to the .org in 2019 from the HN comments. So weird. I'm still unaware of so many events that happened during this period.