As slavery is long gone, employees are free to leave if they choose. They don't owe their lives to a company. Also, they and their work built that company, not the other way around, so the value is in the individuals, not in the excess throughout the rest of the company.
If Imagination was providing the best opportunity, the employees would have stayed. Apple didn't exactly kidnap them. Are they part of this so-called "dirty scheme" because they chose to go?
Fair point. Yet, after Apple pulls out and the stock crashes what do you really expect? Maybe the old saying should be updated to say: "Between an Apple and a hard place"