Similar ambitions are still there from my anecdotal experience (especially among people in the polar ends of the profession's spectrum ie. the new grads and the veterans) but most architects I meet these days while appriciative of the works of people like Corb and other modernists, completely understand their shortcomings.

But what has really curbed the possibility of anything like those movements to happen again is the neoliberal economics in contrast to the post war socialist policies of the time.