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.
hmm not sure if that would work as the model that he was using would be different from what's available so he'd probably notice some differences which might cause a mix of uncanny valley and surrealism/suspension of disbelief where the two are noticably not the same
plus using a chat-only model would be real tragic as it's a significant downgrade from what they already had
his story actually feels like a Romeo and Juliet situation