My brother works in video production and I have some (very outdated at this point) history in that area.

* Video files are absolutely huge compared to basically every other domain. Just dealing with media is not trivial in the way that we take for granted in software. It's easy to fill terabytes for a production. Just copying stuff around can be a noticeable logistics problem. People still mail hard drives.

* A lot of people working in video production are there to be artistic creators and are not very technical. They are often extremely skilled at producing beautiful work using specific tools, but they often don't have the computer fundamentals we presume.

* Unlike the software world which increasingly a small number of very large companies who can invest heavily in centralized processes and tools, the video world still has a lot of small companies.

* Margins are very narrow and many of these small businesses are barely scraping. Production gigs can be very feast-or-famine.

Put all that together, and it's not at all surprising that a lot of productions don't have the backup discipline you would expect.