Who spies whom
The Chinese spies being caught is just a way the U.S. is telling China that they need to improve their technique, i.e., don't get caught.
When information cannot be bought, you steal them. It's a fair game. We do it all the time.
We don't give the C.I.A. US$50 billion each year so they can have a better vacation. They are hired to steal and they steal well.
The Chinese, like their shoddy exports, need some improvement.