User blog comment:Rockman1216/The Fox Marvel dilemma/@comment-993964-20160105234835/@comment-993964-20160106021117

Yes they want all their properties in one roof, but they want it in one roof so they can maximize their profits from it. Marvel works for Disney, every time Disney gets money means more money for the next Avenger film. The X-men standalone movies profit only Fox. Now you say crossover films, X-men vs Avengers. Who profits from that movie? the execs will try to get the most profit for their respective company so I doubt they want to have the short end of profits. What X-men character is so vital to profits that they would agree to such a collaboration? Wolverine joining the Avengers isn't a that big a draw to give Fox the ability to use Disney Marvel Characters. And how many times can Disney profit from it? they can only do one movie like that and I doubt fox will let Disney have Wolverine show up in Agents of Shield or something like that.

Then there's the frustration of what happens if Feige or Marvel Studios just plain hate what Fox is doing with the X-men, story wise or casting wise?

It's not enough for disney to associate with the X-men, they want to have creative control over the property and be the sole profiteer from it. Not even Sony let Disney have all that power and that's just Spiderman.