Off course they want to tax it. They see all this money flow and they don't get a cut. It's all very difficult because a government needs taxes to run. They have responsibilities towards it's citizens. They need to provide security, infrastructure and education. Only to name a few. The sad part is, they want the money for themselves too and there always will be corruption. Unless we can find a way for the blockchain to provide all the responsibilities that the government provides they will need taxes.
RE: South Korea bans ICO, hmmm, do we need saving from government or do we need to grow up?