Definitely do understand the concern of Disney's dominance but not like the other studios were handicapped or anything at the start of the decade. For instance WB has plenty of IP that should in theory rival Marvel but we saw how they handled Middle Earth, DC and Harry Potter this decade. As Illumination proved (and DreamWorks before) there's a definite hunger for animation that's not Disney or Pixar yet it took until the this decade for other studios to finally have their own animation studios up and running.
The live action remakes definitely yeah not much you can do to compete that's just Disney cashing in on decisions that were made 20 years ago and I guess they got lucky with Star Wars too.