No, getting sued and prosecuted for stealing trade secrets, using them as a basis for starting one business competing with the employer from which they were stolen, and then selling that business to another competitor of the one from which they were stolen.
A similar case could be made against anybody who goes to work for a competitor. He fact that you aren’t guilty might not matter so much if you’re facing vastly asymmetric legal resources.
Sounds like he stole a bunch of trade secrets and gave them to his new job, and he got the new job because of his ability to do this. This may not be completely accurate, I haven't been following it too closely, but broad strokes.
You must know this behavior is completely different than simply switching jobs?