If I understand AlphaGo correctly, I don't think that any human in the future will be able to beat the AlphaGo today. AlphaGo didn't beat Lee Sedol because it played new and marvelous moves we need to understand.
It played better because it knew the exact consequences of the options it was presented, and could calculate it and make better decisions than human intuition. No human can develop that reading power, and its not reasonable to think a human in the future will have intuition that beats the calculation of AlphaGo.
Since reading, the core ability of Go can now be completely replaced by a computer, the question is what others decisions can a player make. Can he make strategic decisions better than AlphaGo? Can intuition still best AlphaGo calculating capacity?
Eventually, we can think that we will have computational power to actually solve Go, and if there is any sense at all to play Go after that, its about finding those beautiful games, from beginning to end, that provoke emotions and turn Go purely into art.
