I'm not sure what you mean. If Uni were to propose building a, let's say, Iron Man ride (comics), which the main driving reason is to latch onto the popularity in the character due to the recent movies, you can bet your ass Disney-owned Marvel would deny that proposal.
Probably pointless for us to discuss since all we have to go by is an agreement from 18-some-odd years ago on the internet
Who knows what discussions or agreements the companies have had since then. Anything is possible if it's mutually beneficial for all parties.