Practically I think the price of film is pretty low by historical standards. I am now retired and it seems cheaper. While i do my own B&W processing I get colour films and C41 processed by a lab. Just the processing and at around £2 a roll, any size, including APS! does not seem too bad.
OK, cine film seems to be very expensive, but then it is a very specialised area. 35mm and 120 are fine, although 120 colour is a bit higher realtive to 35mm.
By the way, economics suggests that when something becomes very popular the price goes up, not down. So a massive, and unlikely resurgence in fim will not result in a price job.
Currently I suspect a lot of film is still being produced on equipment that has been paid for a long time ago. Similarly modern manufacturing and control techniques probably mean making some new machines can be a viable proposition, so long as the return makes it worth while for the manufacturer.
If you want to keep film available, and at a reasonable price the use it, otherwise you will lose it.