Some crown jewels are not sellable, obviously, such as the formula for coca-cola.

Yet the Attorney-General of the US estimated that the loss to the US economy due to insider breaches including intellectual property loss, to be greater than $300 billion, and growing, a few years ago.

To Robert who also commented, you had better read Spies Among Us by Ira Winkler, to learn that nation sponsored industrial espionage has been around for decades and is considered fair game by many other countries and their companies.