I don't think they'll ever vanish entirely, but they may have to become more specialist and attach more attractions to make people come to them; maybe the big multiplex is over but more independent ones will survive?
We have a multiplex that since COVID reopening, until recently, seemed to be trying a scheme of showing everything multiple times a day, with a fixed low price all the time and with minimal staffing - but I notice they've recently stopped that as evidently it wasn't working out for them. Most times we've been there in the last year it's been pretty dead.