It kinda feels like a given that as Kingdom Hearts becomes more lucrative for Disney, then they'll naturally get more involved to make sure they get more money (also, since this is a crossover game with Disney properties, they probably saw it in some limited copacity as free advertising to momentarily boost their sales, specifically for things like merchandise). I don't know if I believe that's what going on though, or if it has a handle in anything, but I wouldn't be surprised if it was revealed later on to some degree.