This should be illegal, companies should be forced to open-source games (or at least provide the code to people who bought it) if they decide to discontinue it, so people can preserve it on their own.
Doesn't even take a change of service provider to get there.
Replika had what had very obviously become a virtual mate service too, until they decided "love" wasn't part of their system anymore. Probably because it looked bad for investors, as happened for a lot of AI-based services people used for smut.
So a bunch of lonely people had their "virtual companion" suddenly lobotomized, and there's nothing they could do about it.