I seriously doubt any of those private companies have legal obligations to keep this stuff forever. See https://news.ycombinator.com/item?id=7926642 https://ne

I seriously doubt any of those private companies have legal obligations to keep this stuff forever. See https://news.ycombinator.com/item?id=7926642 https://news.ycombinator.com/item?id=7926642 about what banks do per SarBox requirements to do that.