If the pledge of renationalisation sends the share prices plummeting, then all the cheaper those shares will be to renationalise.
Today, John McDonnell announced a series of hugely popular and necessary policies that were incompatible with continued membership of the Single Market and the Customs Union.
It is no wonder that Labour delegates preferred to vote on eight other things rather than on Brexit. Which of those eight ought to have been dropped, and why?
And it is no wonder that 232 Labour MPs have not called for Britain to remain permanently in the Single Market and the Customs Union.