He should double-check his contract to see if there's an "anything you do either inside or outside of Wolfram Inc. is automatically our property" clause.
Stephen Wolfram knows about this. He just hasn't taken action yet.
So, he's just been sitting around for several years just waiting to "take action" ... doesn't really make sense. I'd also like to think that Jan Poeschko is smart enough to read a contract.
If the designer of the rpi works for Apple, the rpi is designed to work like an iPhone and apple. Probably owns the rpi ip the best yes its EXACTLY the same.
Stephen Wolfram knows about this. He just hasn't taken action yet.