Re: Power unchecked
I think if Cameron had turned round and said in effect "I'm appalled that you plebs ignored me. In return I'm going to ignore your vote", then there would have been a lot more trouble. UKIP wouldn't have faded away, Farage would have garnered a lot more support and the issue really wouldn't have gone away at all. Distrust of the democratic process would have gone through the roof. So Cameron didn't really have any option.
Are you really sure the High Court said the referendum was fraudulent? There was criticism of activity on both sides, and only the Leave campaign got properly investigated. In any event, we don't have a tradition of electoral fraud in the UK generally, and this referendum wasn't the occasion that demonstrated that that is no longer true.