The American Government and those who lobby all the time for things to get their way. The only kind of history they like, is one they approve of. Any historical facts or things they disagree with, is white-washed and buried. The only things they bother to archive are what they think is dear to them and things that are mostly commonly known, nothing of interest.

Profit is the bottom line.

It's quite sad, how many museums and archival efforts are allowed to die here. The video game industry, was happily allowing over 87% of games released in the past, to just rot and die off without a care. Pirates had to step in a preserve. The music industry, would only care so much about keeping things if they were successful artists. Just so much selective and arbitrary reasons to keep things.