Well, I can't speak for communists, but I notice that every time there's a severe economic crises extremely non-capitalist measures are required to stabilize the system.
I don't know if that's the "end" of capitalism, but it sure means capitalism isn't sufficient.
I always hate that false dichotomy. There are some things for which capitalist incentives work really well (cereal choices, inexpensive technologies...etc.) and there are some things it fails at miserably (health care, self-regulation...).
The neat thing is that we get to consciously make choices about how to set up the system. Eliminate the market freedom of health insurance companies necessarily results in a liberation of small businesses and employees.