Comicbook movie crossovers

I keep seeing people in various places asking the same question. When is their going to be a comicbook movie crossover film? FF team with the X-Men to face Dr. Doom and Magneto. Daredevil teamed with Spiderman. And so forth. Its NEVER going to happen people. The film rights to the characters are owned by RIVAL movie companies. Same reason Molly Wire wasn't in Johnny Mnemonic. Because a different company owned the production rights to Neuromancer...