People keep saying the superhero bubble will burst but I can't see it happening for at least another 10-15 years. DC are shyt we know that, let them create their crap films who cares (BVS couldn't even crack a billy), but Marvel are just pumping out great film after great film and the box office is only going to grow and grow. Even their D-listers like Ant-Man are doing half a billy, Cap 3 doing over a billy maybe even 1.5 billy, 2 billy wouldn't surprise me.
Honestly, Marvel are gonna reign supreme until at least 2028; after that who knows but I can't see them stopping anytime soon. Marvel are gonna become the biggest studio/franchise is film history, literally, film history.