That's not how it works.
From the Orlando Sentinel, originally brought to these boards by "fillerup".
Through a 15-year-old licensing contract between Marvel and an arm of NBC Universal — a contract Disney inherited when it bought Marvel — Universal Orlando is the only theme park on the U.S. East Coast that can use some of Marvel’s best-known characters, including Spider-Man, the Incredible Hulk and the X-Men.
But the contract also gives Disney a number of rights over Universal, including the ability to audit Universal Orlando’s books, to ensure it is paying the appropriate amount of royalties, and the power to review Universal’s promotional materials when they feature Marvel characters.
Universal, which doesn’t want to abandon its Marvel rights after having invested heavily to build Marvel Super Island in its Islands of Adventure theme park, now must pay millions of dollars a year in royalties to the corporate parent of its archrival. Disney, meanwhile, finds itself unable to use the most popular characters from its pricey new studio in Orlando, at the company’s biggest, most visited theme-park resort. (Universal Parks & Resorts also holds exclusive theme-park rights to Spider-Man in Japan, where Disney operates the two-park Tokyo Disney Resort.)