Cameron Wants To Do "AVATAR 4"

Now "AVATAR 2&3" aren't even out yet and won't be out for like another 5 years or so and director James Cameron has already mentioned that he wants to make a fourth film too. My reaction was basicallu what I said above. I hate how people over in Hollywood plan this far ahead with sequels.
Yeah, okay, Marvel have to with their Marvel Cinematic Universe (MCU). It's all cross-over films and if they're going to add more superheroes to any "Avengers" sequel, then they need stand-alone films of each character first. They need to plan like that far ahead, but Cameron hasn't even released a 2 or 3 yet and he's thinking about 4......I mean c'mon!!!