Fantastic Four is being rebooted too, everything's getting rebooted nowadays. Makes you wonder how Harry Potter managed to survive this long.
I don't think the act of rebooting is as bad as that, now, they aren't even waiting decades to reboot things. You mentioned Fantastic Four, which is a good example. They are doing it with Spider-Man too(another movie, which will take a more darker, realistic, gritty Nolan-wannabe take on our classic web slinger). They did it with the Hulk. Though, who knows, give a couple years and they might just jump back into the fray and reboot all the Harry Potter movies, the Saw movies, the LotR trilogy, and Superbad.