The actual extent is still unknown. There is a possibility that industrial secrets have been transmitted, but there's no proof or even allegations of a particular case which has happened. I'd rather know more details before passing judgement.
There is enough evidence that the NSA does industrial espionage against Germany and Europe. Whether the BND was stupid enough to help them, remains to be seen.
The NSA has given target data to the BND and the BND has then handed over the collected intelligence about these targets to the NSA.
The check who were the targets, was a joke. There were literally millions of selectors and a quick check already delivered thousands of selectors which were directly against German interests.
