The needs of capital have changed since 1955. Today it needs no borders, a constant reshuffling of the masses, and the middle class forced to provide the population that’s been rendered useless by automation with enough purchasing power that will keep it in mute, dumb acquiescence.
What Corbyns and Co call socialism would be anathema to capital as it was 60 years ago. But it’s exactly what the financier class needs today.
That Corbynism, Bernyism and Warrenism seem rebellious and anti-establishment to people when they are the exact opposite is not stunning. Cool capitalism makes a badge of honor out of showy, meaningless dissent like this.