They also ruined their last traditional animated movies. I liked Emperor's New Groove. I didn't love it like with Aladdin or Lion King, but I liked it just fine. I thought it was funny, but only the first time. The second time, it was boring. Whereas I still watch those classics today and have a great deal of fun. I liked the Emperor's New Groove, but after watching 'The Sweatbox', I plain hated it, and Disney's executives. Instead of going for something epic, they decided to stick with a risk-free plot line. To know how high the director and writers and animators were aiming and how epic the movie could have been and to know that Disney cut their wings is so frustrating...
I agree completely. I LOVE, LOVE Emperor's New Groove, but what we could had was the last great Disney musical until Frozen 11-13 years later. KOTS was a HUGELY EPIC story with gorgeous music (Eartha Kitt singing a Disney movie

) and not to mention, a Latino Disney Princess that everyone wants. We had something as good as lion King, but sadly the test audience hated it because it WAS a Disney movie. They were sick of "Lion King" and "Aladdin". They wanted something fresh and new, so we had Emperor's New Groove. And I really feel terrible for Sting and I don't blame him for hating Disney now. At least, some of the KOTS songs was on the soundtrack. One Day, She'll Love Me is GORGEOUS and Sniff Off the Light would have been up there with Be Prepared and Poor Unfortunate Souls. I do think Disney can redo KOTS and the music since it has hardly any resemblance to Emperor's New Groove. I think the world is definitely ready for KOTS.
I think 'Princess and the Frog' didn't do so well because people don't believe in traditional animation anymore. But if Disney insisted on it with Tangled and Frozen instead of adopting CG, I think they could've revived it. Instead, they've become just another CG studio.
I don't think it's ONLY because of 2D. I think it's mostly because the second black/first African American Princess is a freaking animal. Because come on, if I was black, I would probrably have been offended and angry about that. And it didn't help that these zealot-Christians flipped out about voodoo. Because we never have seen magic in a Disney movie before.

They just need to give 2D to the right Disney movie. Giants and Moana can easily be 2D. So, why not restart 2D with them? If Frozen was 2D, it's a pretty much safe bet that 2D would have been back.