People decide what to do. Not smart contracts. Myriads of things are going on constantly. You just cant vote on everything. Just because you/me do not know anything about, lets say bridge building or international trade agreements ets... Plus we do not have enough time. Plus we do not want to waste our life on all this.
So we end up the same system. Maybe more transparent. Maybe less=) Because of all the cryptography, coding, increase of information rate - that our brain just cant handle.
We already have politicians on steemit=)
RE: Don Tapscott : The Blockchain Revolution