Oh yeah, Disney owns Fox now and that comes with The Simpsons. I wonder how that contract is worded.
Selling the rights for Muppet theme park attractions to Universal would actually help Disney. Apparently they are part of the merch division, if Universal had the Muppets they would sell a ton of merch which means Disney makes money. Apparently Disney makes money off of the Marvel merch sold there.
Frankly, as far as theme parks go, The Muppets fit better with universal. Disney is mostly fantasy and story book stuff. The Muppets are mostly real life settings with puppets. If anything, what Disney left with the JHC is more fitting for Disney. Fraggle Rock, Dark Crystal, Story Teller, etc. These properties fit more into what Disney wants now over the Muppets.
Universal is all about movies being made, like a back lot. That was the original idea behind MGM studios as well, which makes it a perfect Muppet park. Now, MGM is Disney Studios and is turning into a hub for "insert property land here". Toy story Land, Cars Land, Star Wars Land. The theming is changing and it doesn't fit The Muppets anymore.
The Muppets would.fit in perfectly at Universal studios as their own park that is almost a parody of Universal. A Fozzie animatronic could host a studio tour and get all the info wrong. The Muppets can star in various movie parodies, like Animal in Jaws. Rides based in Muppet Movies would fit in much better there too.
Eh... anyhoo... it won't happen to no reason to get myself worked up over it.