If your system needs to exist under such perfect conditions to exist and is so susceptible to being turned into some dictatorship, then your system may as well not exist. Communism will make you a slave to the state. You won't get to play your music, you wont get to study arts, you'll work and contribute to the community just like everyone else. Your hours will be dictated by the government and what you do with your funds will be wholy dependent on what the government wants to offer you. Communism is shit.