Yes, even punching in old
ticket prices from even about 10 years ago into an inflation calculator shows that they've gone way beyond inflation (10 years ago the price was 59.75, 11 years ago it was 54.75). Even with going with the $2 a year increases they used to do before more recently (which still outpaced inflation) the price would now be $76.75, going from 11 years ago.
They feel they can do this but I do think that if they're too overconfident then they'll lose a lot of people who feel it's not worth it anymore or who feel it's too expensive. I would think a lot would be close to that point as it is. The high attendance now can be largely attributed to people who were saving during the recession (and likely people going now before they feel it'd be too expensive or not enough value).
That being said, not many people get 1 day passes and there are ways to get lower prices, although they seem to be getting rid of some of those now. Examples are getting rid of no expiration which always was possible to get until this year, and being a lot more rough on FL resident passes (no expiration was gone on that a few years ago, they now include blockout dates, no discount on 1 day, and only go up to 4 days).
As for resort pricing, as long as they don't go too high on the "value" resort prices people will feel the prices are ok enough probably. If they do maybe more will stay offsite.
I think as long as people feel they can get a decent price they'll still come, but I think Disney could be on a dangerously slippery slope if they become too overconfident, which they're starting to do in my opinion