Has the Left Given Up on Ending Capitalism?

Is the age of left-wing revolutions over? Does this inevitably mean that the left has to accommodate itself to a capitalist economy and a capitalist world system? I firmly believe that the way forward to a more just society will be worked out incrementally by today’s left, especially by the left of that left who want to move society towards a new post-capitalist social system. But facts are facts, and right now the left is united around a set of sacrosanct principles that result in a refusal or incapacity to imagine practical ways of changing who is in power in society’s institutions.