Because of human nature fraud, theft, errors, disputes over assets etc. that go along with money whatever its form need to be properly dispositioned too. A block chain has no answer for that. And without dispute resolution methods the system will die or merely attract the underside or 1-off users of society.
Second, an automatic no to power is simplistic so as to distort solutions. Power is fine provided it's not corrupt and accountable. Getting that and keeping it is a hard problem, but there's no end-run either.
Finally, how many examples of frauds, thefts N must occur before crypto is associated with fraud, theft? That N was long ago surpassed.
