I have no theoretical problem with reboots coming out quickly after the last franchise. It's totally dependent on the quality of the previous movie.
If the previous movie is good, creating a reboot soon after creates two problems:
- It devalues the previous good movie. "Sorry guys, that epic motion picture you just saw doesn't actually mean anything. We unexpectedly pinched out a new sequel!!!!!" Spiderman 3 isn't necessarily a good movie, but consider how unimportant it feels now that The Amazing Spiderman has been released.
- It devalues the new movie. Like I said in the above post, it's hard to come up with a new take on a character that's good without stepping on the older movie. For example - The next place to take a Batman movie is probably to a more fantastical one. You could never do Mr. Freeze, Clayface, or Killer Croc in the Nolan movies. You wouldn't necessarily want to do a less adult Batman (because it would be dismissed by adults), but you want a universe less grounded in reality. But if you do this now, how can it be anything but a reaction to the Nolan films? Whereas if you wait some time, our conceptions of Batman and how we perceive content will be completely different, meaning it would be able to be truly original.
But whatever. At least Nolan left Batman. No matter what happens, his movies will be what they are.
If the movie is bad, then neither of these two things matter.