I think you misinterpret the governance model.
The Dash network is not a democracy system. It isn't the "people" who have the vote, it's the nodes. The network is a machine and in order to 'steer' that machine it's necessary to get control of the steering wheel which is the nodes, just like if you want to take control of a ship you need to get control of the bridge, the engine room, the ancillary services and so on.
Transfering the voting power from the nodes to the holders directly would be potentially catastrophic and far less secure. The governance mechanism in Dash is decentralised. That means that the protocol does not concern itself with who controls a node or how many people, just like a ship does not concern itself with who crews it or what qualifications they need.
In years to come, if Dash continues its marketcap growth, almost no single person will hold enough Dash to control an entire node on their own. This will have the effect of forcing the holding community to structure itself in some kind of effective way that it can facilitate the management of nodes. I don't know how Evolution is gonig to advance this model but there's likely to be at least some changes in that direction.