This has been going on for decades. I noticed a Chinese man mailing out LOTS of envelopes to China while attending a university here in the US in the 1980's. He was obviously stealing and copying computer and engineering data and text books,and sending them to China. I reported it to the postal authorities,and they told me "there is nothing we can do about it unless you can prove a crime has been committed".
We gave them the rope,and now they are going to hang us with it.