Take someone who's a committed revolutionary, thinks we really have to throw out whatever there is of the capitalist system and market system and so on, take someone like that. They're still reformers. All the people you mention are still in favour of developing a decent health care system through government intervention because that's the only option. None of them say "lets not improve lives of people because we'd like to see a revolutionary change." They'd all be in favour for example. Take say OSHA, the safety and health goals in the workplace, for years its been declining under Bush probably disappeared. But everyone you mentioned would be in favour of strengthening those regulations, they're government regulations. Because what you're in favour of if you're serious, and the people you mention are, is pressing the institutions to the limits. Seeing what they can achieve. You're not gonna get mass popular movements trying to overthrow the institutions until people recognize they cannot satisfy our needs. Therefore you try to press reform as far as possible within the structure of existing institutions meanwhile developing alternative institutions from within building the future in the present society. That goes on simultaneously.