I know they definately want to keep people on property, but I can't see them building a park similar to Sea World or even dedicating part of the AK for sea life. Sea World, while a theme park, is not known for their rides. I think Disney has a genuine interest in preventing people from visiting Universal but not necessarily Sea World. My guess is more people who vacation at Disney go to Universal in the same trip then Sea World. The focus on new WDW attractions has been E Ticket thrill rides, trying to bring in thrill seekers to WDW. Thrills and effects are something Universal prides itself in, and something that is really not the focal point of Sea World.