"The sad truth is that a desire for power is hard-wired into human DNA. Politicians, like other members of the species, like being in control. What holds them back is an elaborate political structure based on checks and balances and the dispersal of power. Without such a structure, all governments would be like Zimbabwe's. Such structures do not evolve on their own, and a tiny number of people, whether historically or geographically, have been lucky enough to live under them.
"The natural tendency of all governments, being flawed and human institutions, is toward the agglomeration of power."
J Norman et al
Interactive Democracy re-defines the power balance to help keep governments in check, but it's real purpose is to allow individuals to better express their democratic will and to enhance public debate.