In 1929, our intellectual forefather Ludwig von Mises penned a lengthy tome about how socialism does not work. Not only does it not work in practice, he noted, it does not even work in theory, as some people say. The fundamental premise of his argument is that socialism cannot allocate resources effectively. Only the price system of the market (capitalism) can do that. No one person or committee of persons can appropriate resources for millions of people. In fact, even within a family unit, there is a good bit of friction when making such decisions. Scaling that up any further causes problems. The only thing that really can be done is provide a very basic distribution, but even that quickly becomes a logistical nightmare when scaled up too high.
Journalist Discovers the Difference Between Central Planning and Real World Experience