I'm talking mid to long term here. To rephrase, is there a sizeable amount of players who will stop playing, knowing that they cannot ever be the best? Because when AI beats one, I don't believe there is a coming back.
For the concrete AlphaGo example, of course it was hugely popular but I would be interested in the evolution on the number of players, how many of those viewers started playing balanced by how many existing players lost interest following the matches (excluding GO researchers :) ).