I’d say it’s an unfortunate stalemate. Disney probably doesn’t want to pay Uni a gazillion dollars for the rights, even if it opens up a lot of options at their parks. They’d rather find loopholes like using GOTG, and occasionally have a Dr Strange character in the parks but not come out and say who it is (I’ve seen this at HS) and the like. I’m sure they’ll try and push more characters that Uni doesn’t have rights to in movies, and then use those characters in future rides, experiences, character meets, etc.
And on the flip side, Uni doesn’t want to hand over rights to something Disney could use in a surge of new park rides, experiences, etc. Also whatever money they’d get, a lot of that would have to go into having to completely redo a section of their park, when they are already have to fill Ep Universe with IP’s. Also Uni has held on to some of their IP park stuff far too long as it is (there’s still a Barney show for &@$* sake) so leaving up an aging marvel area isn’t exactly out of character.
Someone who’s read thru the legal docs- can Uni actually ADD any more rides based on Marvel characters? Like I’m gonna guess if they wanted to make ‘Thanos’ flying infinity gems’ (a ride I just made that’s like Aladdin Flying carpet but with red gems) Disney and/or their contract would prevent it. But could they do the (Venom, Adam Warlock, or um...Silver Surfer) coaster?
guess my summation, neither seems too eager to do anything, Universal’s Marvel is still somewhat popular but nothing compared to what WDW could do with it, but outside of upgrades, the Marvel area at IOA is exactly what it’s going to be, today, in 2025, and in 2030. And that’s kinda a bummer.