China, North Korea, Russia, Vietnam, Cuba. Every single time, the state becomes authoritarian and repressive, ignoring human rights, starving and imprisoning huge populations. Eventually it either fails, or the state keeps the authoritarianism, but gets rid of the communism. Look at China and Vietnam. They’ve transitioned to a mostly market based economy, but kept the authoritarianism.
These are examples of everyone starving because centrally planned economies are a bad idea.