I did a really quick search and a mechanical hard drive costs around 1$ for 50gb of storage while a blank Blu-ray was closer to 1$ for 25gb of storage. That would suggest a drive is more effective at storing data from a cost perspective, so there just needs to be a service that sells movies in a digital format.
At one job we had a digital form for new user requests. This existed for auditing purposes, but it also helped to collect all the necessary information for the change. I was always impressed at how people managed to fill it out wrong every single time.
For example, I would get a request to update someone’s name and they would fail to include the former name or the new name or even enter their OWN name for one of the fields.
What I learned is no system is idiot proof, no form will ever be filled out perfectly, and everything will need manual intervention at some point.