People respond to quality. Of course Disney can build whatever they want, that doesn’t mean they SHOULD, nor does it mean what they build is good. Put in effort and build something like Cars Land, and guests will respond. Build junk like MB or Pixar Fest and you won’t see the same results (limited time merch notwithstanding).
I’m shocked that so many here believe the design philosophies of WDI from the early 1950s through the late 1990s is out of date or obsolete. Immersive storytelling and richly detailed thematic environments aren’t things that go out of style.