Thank you Harold, for pointing me to this post. What concerns me is the possibility that your argument seems to be circular. The difference between 'Talent' and 'Labour' is presented as a difference in bargaining power. But one of your examples is air traffic control. That's definitely knowledge work: it requires integration of multiple streams of inputs, rapid decision making, and every case is different. And yet, air traffic controllers have low bargaining power, which is the thing you purport to explain.