I think what they are saying with the chart is that if they see anyone who is trading in that upper right quadrant (high one second alpha, high take percentage)

I think what they are saying with the chart is that if they see anyone who is trading in that upper right quadrant (high one second alpha, high take percentage), they can kick them out of the pool, or at least that institutions can set some flag on their order entry port that will prevent them from matching against those parties.