To many, money isn't the goal, race, or desire in life. If you ask me, this emphasis on production is terrible not only for humans, but the planet as a whole because it puts an unsustainable burden on the Earth.
Ever read how Lenin did, in many ways, improve conditions for Russia (even allowing small businesses to remain running under a capitalist model), or that communists such as Leon Trotsky and Rosa Lexemburg denounced Marxist-Leninist Communism (which was put together by Stalin) as not being an ideal or suitable model for Marxism or Communism? (China and Vietnam, BTW, follow Stalin's approach of Marxist-Leninist).
AND, you also ignored to issue of technology and how Capitalism is not well suited for a society that is information based and seeing more-and-more jobs replaced by machines. The "shared economy" isn't a theory but rather something that is going on, right now, because so many people are loosing jobs and having to do whatever the can to make money, and for many this means taking whatever jobs they can get as independent contractors, short term/temporary workers, renting out their bed room to a stranger, and for less pay, no benefits, and no stability/security. What are we going to do when production becomes so automated that the only people still working at a factory is the maintenance crew?