Have you ever done anything together with a group of other people? That is a company. That's why they are called companies. They are a group of people doing things.

That has existed for millions of years already. First as hunting companies, then as raiding companies. It exists in other species as well. It will never go away. It has existed in every human society, no matter what political or economical ideology.

The real question is how companies should be organized and owned.