I think Disney may finally have reached critical mass on making people mad. If this had not been right on the heels of so many other price increases it may not have caused such consternation, but put it all together and the cost for your week at Disney has probably gone up from $500 to $1500 per person depending on where you stay.
I quit going to college football games at a major university near here several years ago for the same reason. Ticket costs kept going up, the cost for concessions was obscene, and parking was becoming almost impossible. The problem is, when I quit going there was someone else with more money than sense who took my place and they never missed me.
The problem here though is if that enough people rebel at cost increase after cost increase and attendance goes down, they will simply raise prices again to make up the difference!