In addition to the other comments, why would you start investing computing power (and therefore money) in a 'currency' that is centrally controleld. Just to 'take away said control'? There's no motivation for that.
Bitcoin might have 51% dishonest problem but it can be made honest again by increasing total computation. Whether 51% are honest or not is function of total computation power [TCP]. Probablity of 51% being honest goes to 1 as TCP goes to infinity.
My point was, only very few people are about something like this.