Actually, Cuba is far from successful. It has trading with Russia at the moment which is why it is still thriving. The US is hoping to 'deplete' it by keeping up a barricade of trade. Without Russia, they don't have the supplies to maintain themselves, but I will agree, their leader is not your typical dictator, or so we think.
Communist democratic: In Soviet socialism, the people decide. Example: cooks find out the best way to cook things. Engineers find the best way to make buildings and so on. This seems to work, but the problem is one person gets all the power. So, some countries today actually have this adopted idea: you can run your company (small business) as a capitalist style company, but once you hit 30+ employees, you must become communistic: in this sense, it's no longer: pay the employees minimum wage and the owner gets everything else, but rather, everyone gets a percentage based on their work. The owner may never have 50 or more % of the share.
--->looks good as I said. My only issues are: would a big leader really never turn democratic? Also, seems like this idea works for small scale countries.