There is a saying now in Russia: Marx was wrong in everything he said about communism, but he was right in everything he wrote about capitalism. Since the 1980s, the nearly worldwide re-embrace of classical economic philosophy has predictably led to increasing inequalities of wealth within the U.S. and other nations, and to more frequent and severe economic bubbles and crashes.
Which brings us to the global crisis that began in 2008. By this time all mainstream economists (Keynesians and neoliberals alike) had come to assume that perpetual growth is the rational and achievable goal of national economies. The discussion was only about how to maintain it--through government intervention or a laissez-faire approach that assumes the Market always knows best.