The charitable read is that their restrictions for "safety" (i.e. what's separating Fable from Mythos) makes this inevitable. If you could just make your own Mythos it would circumvent the protection.
Which kinda just highlights how weird this situation is.
"Safety" is just marketing spin for their coming attempt at monetization based on exclusivity.
I don't think you know the people working at anthropic. They truly believe this. I think someone people are so used to people like Altman they think everyone else is like him.
"Haves" and "Havenots" is how they should be calling, init