I don't see EA letting go of Ultima as EA is where IP's go to die and they never seem interested in selling them back or to anyone else.
I could see EA selling it for two reasons
1. Larian has money and also is invested in it. Since Swen has said that Ultima 7 is his favorite rpg
2. They can't actually make a new Ultima game as they don't fully own the rights to the IP. Richard Garriot instituted a clause in his contract saying he owns the rights to all of the major characters from the IP like Lord British. This led to EA being forced to change the character into a woman when they tried making an Ultima mobile game. I could foresee him giving Larian permission however given how well liked BG3 was.
Sadly Paradox owns the entire White Wolf line including Vampire the Masquerade and they are currently focused on making Bloodlines 2 into utter trash.
Paradox also licenses the IP out to indie studios no strings attached
https://www.gamedeveloper.com/game-...own-vampire-the-masquerade-game-sort-of-Arcanum is owned by Microsoft. Meh.
Arcanum would be the most interesting as it's one of the best examples of a classic rpg that was completely abandoned and had no sequel.