[astrodust]

Incentive is one thing, budget is another.

Keep in mind stuff gets lost all the time, even really important things like nuclear weapon components like https://en.wikipedia.org/wiki/Fogbank

[kadoban]

Fair. But looking at that story (very interesting btw, thanks), they did recreate it. So incentive does mean a lot when $$ is also available, which I'd suspect it is in movies.

[astrodust]

I think the US nuclear program has a much bigger budget than Disney, and if they need something, they just get it.

The movie industry had cheaper options, so they went with those.

[kadoban]

I think you're underselling Disney's budget and reach. Yes, it's probably technically smaller than the US nuclear program, but even just Disney is worth $200 billion USD, ignoring all other studios and etc. Movies are big money.