You'd be forgiven for thinking that Disney's ongoing purchase of Fox might spell the end of Deadpool as a movie franchise. It's not like the Merc With A Mouth particularly fits with the brand (even when the MCU has suddenly started to get all dark).
But it might not be Disney that actually makes a third solo Deadpool movie unlikely, according to Ryan Reynolds anyway. And even if the sequel makes the same kind of money as the original, that might not be a positive to getting a threequel off the ground - because, for Reynolds, success just means being given too much to work with, as he told EW:
I don't know that there would be a Deadpool 3. I really don't. I feel like the character, in order for him to function properly within his own universe, you need to take everything away from him. I don't think that you can keep doing that. I do see him as being a part of X-Force, obviously. I would love to see him in a team-up sort of thing, like a mano a mano or a great female character from the X-Men universe. I just think if you're going to do another Deadpool solo film, you've got to really, like, get that budget down to nothing and just swing for the fences, and break all kinds of weird barriers, and do stuff that no one else can do.
In other words, the natural trend of sequels getting more money will actually make a Deadpool movie harder to make properly. But at least it's good that we'll get him in team-up movies still, because it would be a travesty for the character to retire from film-making simply because he's TOO popular.
Hopefully, Disney will see the logic in what Reynolds is saying and will use the character the right way in the future. Because a Deadpool v Wolverine movie would work even if it cost $2m.