Cuba has been testing the sharing economy by necessity, not choice. With the breakup of the Soviet Union, and the decades of being cut off from the US, Cuba has learned to be self-reliant. Besides, a citizen-controlled economy is less expensive to run than a centrally-controlled economy. That self-reliance, when de-centralized, is effectively a model of the sharing economy on a national scale. It is working, but not perfectly. Some of the imperfections are the consequence of a shifting culture for the government officials involved.
“Cuba Is Using Cooperatives To Decentralize The Economy” – Resilience
Pretending Not To Panic 