Weirder things have happened.
You never know what kind of trouble Comcast can get into. Or how Universal can overextend themselves (new parks, new resorts, new lands) without generating enough income to cover it.
In the comics-world, Disney-Marvel have pretty much killed off the Fantastic Four and the X-Men. 20th Century Fox have pretty much killed off the Fantastic Four cinematically. The cinematic X-Men franchise is starting to crumble under its own weight (esp. with Wolverine's swan song done).
The leaves Universal with just Spider-Man and the Hulk as the only viable and popular anchors to a land. How long and far will that get them? How much merch will that move (especially since you can get Marvel merch at WDW)?
It's to everyone's interest to renegotiate and be generous to each other.