> Look at competitive chess and Go and how they have fundamentally been transformed.

For people like me, competitive chess killed chess long before Deep Blue. It only feels fair that competitive chess players now feel like I did :-)

I had a math professor who played competitive chess in his youth. He told me he realized the demands for competitive chess were such that he couldn't really dedicate himself to math (or any other discipline) at the same time. So one day, he gave up chess - and refused to play it for the rest of his life.