To answer your question is complicated because of the existence of Centaurs[1]. I will say that the fact that entities like Renaissance [2] exist is proof that there are still some humans that are better than machine learning algorithms. Now whether Renaissance employs Centaurs is hard to tell. My statement though is that machines reduce the number of experts because they reduce the population looking at a problem and my suspicion is that experts are uniformly distributed. So in a population of 100, there might be 1 expert in a population of 10000, 100 experts and 1 super expert, etc.

I chose the financial markets because you could say that it is the perfect competitive space for this kind of evaluation, though I wouldn't be surprised if Centaurs or humans existed in other areas as well which are better than machine learning algorithms. Still the point stands that for people in the 91st to 98th percentile a lot of value will probably be lost when humans start going away from practices in droves. Another acceleration for the 1%.

1. https://en.wikipedia.org/wiki/Advanced_Chess 2. https://en.wikipedia.org/wiki/Renaissance_Technologies