In that case, it's the creative direction at fault. Sure, you can say audiences don't like shows, but the popularity of shows at Disneyland Resort should prove otherwise. Plus, WaterWorld, Special Effects and even Animal Actors receive a healthy number of people per show, so it's not like the interest isn't there.
Rather, the issue lies on the creative aspect not the audience. Compare the Mad T Hatter show at Disney California Adventure and the entertainment offerings in Universal Plaza. Why is one company able to attract an audience while the other isn't? I think that shows people are open to compelling entertainment.
Just my thoughts.