I agree with the above post from
@Bocabear
I'd also like to say that Disney creates the appeal because they're conditioned so many people to blindly enjoy whatever they create (to a large extent).
Disney could appeal to the masses by creating IPless attractions in the countries because Disney is the one who decides what's appealing and what's not to their fans.
Disney is creating an environment where only Disney IP's are appealing for a reason:
it moves merch and it entices children (who, in turn, push their parents into going to Disney World).
Remember in the 1990's when Michael Eisner was actively trying to appeal to EVERYONE?
There was new stuff for six year old girls that was just as good as the new stuff for teenage boys which was just as good as the entire nighttime district for people in their 20's which was just as good as the family attractions.
That's gone now.... And it's not coming back.