So long as Article 50 is not complied with or, were the Parliament pass a resolution to the effect that the outcome of the referendum will be ignored - on whatever grounds, they could keep on doing this until the people tired of the farce. For the UK elites the danger is that someone, even if not Corbyn, WILL start discussing the reasons that 90% of the people are unhappy and hurting. And I don't even know if that would resonate with any significant part of the electorate.

"It is not necessary to have hope in order to persevere."