If you want film scanned today to individual files per frame, it's still a bunch of money if you can find someone to do it... and good luck getting it done right.
I was considering trying to build one out of an inspection microscope, but gave it up and just had my most-important reels scanned to TIFFs.
justifying the cost of the people that did not give up and made an actual product. "if this shit was easy, everyone would do it!" is something i remind myself all the time
Also the opposing viewpoint to remind yourself of is that hey, SOMEBODY was the first to make one of these things and started a company to do it! I've given up on ideas before starting because of the manufacturing technology required, only to see a company like GoPro come out of nowhere and own a market segment.
It used an 8K line array CCD, and pulled a film frame across by locking the frame in a gate and moving the gate with a servo.
Indeed, 6 figures for one of these machines.
https://www.filmlight.ltd.uk/support/documents/other/legacy_...