"Absolute power corrupts absolutely." -- Lord Acton
Even in our SPL DAO, there are whales and shrimp and the mighty whales have much more power than the weakly shrimp. I also support decentralization, one of the reasons I'm still here gaming and commenting on Hive, but there still needs to be some authority to enact the will of the community/whole. Of course, there is also the issue of enforcement, which of course begets the power struggle of who is responsible for enforcing and maintaining the will of the DAO.
Bit by bit, the whales will lose some power, but it takes years. Especially in SPL where it is constantly making them more powerful.