The news here isn't that China has been hacking US companies. The news is that the USA has started calling them out on it. I wonder if this signals a shift in foreign policy?
I think the real news is that China isn't publicly denying these incidents anymore. Though, it seems like nothing has really changed.
If they were really concerned about espionage and eavesdropping, the first thing they would do is make sure that the phone lines to the White House were run by domestic companies and not a company with links to Israeli intelligence.