I agree that Disney will keep raising prices and with the idea that people are angry more about the lack of new attractions then the prices. It's also painful to watch UO and other parks build new things while Disney stands pat.
I do think that Disney may be hurting themselves in the long run in two ways. First of all, people may pay the ticket prices, but they could be staying off-site, not buying souvenirs, and spending less money on food. It's really hard to track that without specific surveys.
Also, there is a point where people who spend more and don't have better experiences (i.e., FP+, crowds, lines, etc.) will start to lose the goodwill. We aren't there yet, but Disney should be careful not to push too hard. While I don't expect Disney to ever have a huge collapse, they could lose ground if fans start to rethink their unabashed love for the parks.