The closest involved Apple selling Xerox pre-IPO shares [1]. And there are zero allegations any PARC employees who moved to Apple with confidential information the this has gone down.
> acting like this is not commonplace in today’s business environment
It's not. It's why it gets litigated and criminally charged. I won't disagree that there is a section of Americans who think it's commonplace. But that's because they're either personally doing the crimes or surrounded by criminals.
[1] https://www.latimes.com/business/story/2020-02-21/larry-tesl...
This however does actually seem far worse, reminds me more of Waymo vs Uber, people can go to jail.