Movie tickets won't skyrocket. The price to make content will only go down. Best case, creators will be able to make better movies w/ a fraction of the $$ (faster iteration on concepts, cheaper CGI, no need to hire extras, etc). Worst case, movie makers don't find AI useful and ticket prices stay the same.
Worth noting that the weird artifacts and morphing transitions that seem to be "free" and perhaps too abundant in AI videos would've probably been impossible or extremely difficult to create otherwise.
The industry may be cooked, but the economic effect you predict is entirely illogical. Things don't get more expensive simply because other things get cheaper.
> Get ready for $100 movie theater tickets, because the cost actual creative work is going to go sky high in the next few years
I suspect movie theaters will just die. Even nowadays, on the occasion I go to see a movie, I damn near gave the entire theater to myself. Given the output from Hollywood is already abysmal, I can’t imagine paying $100 for it even if the alternative is AI slop.