A counter culture that has been productive and changed the status quo is no longer a counter culture by definition, since that implies that they have the power

A counter culture that has been productive and changed the status quo is no longer a counter culture by definition, since that implies that they have the power to alter the dominant culture, which implies that they are the dominant culture. I think what you are really referring to is a social movement, which often aligns with a particular counter culture that has decided to organize. But there can be many counter cultures and not all of them the deliberate goal of social change.