Honestly, I think Disney might return to the 2D theatrical realm seeing as how Hasbro and DC are doing...now that I think about it. That reminds me of one of the reasons Disney stopped doing the 2D theatrical releases. Home On the Range did not fail because of its animation. It failed because of it's fun yet poorly written story. BOth the MLP movie and Teen Titans Go to the Movies bombed at the box office.
At first I thought that Disney would come back into the ring to show them all how it's done. But then I remembered that Disney likes to make money above all else, they will just stick to 3D as long as it brings in the millions, cough Cars 2 cough.
I could be wrong though but honestly after watching these other films that broke DIsney winning streak from time to time, Rango and Into the Spider-verse, I thought that if anybody truly needs a win it either DreamWorks or Warner Animation. No more Lego movies and No sequels to Boss Baby.