It would be nice if they preserve a snap shot of Alphago as it was a the start of the Sedol games as a historic thing. Then if they open source it people could go play it too. They have mostly open sourced their code but not I think the learning data.
They would only need to open the learned coefficients, not the data learned from.
I like the way you think. :D
Clever, but they could easily detect this on their servers.