If Communism is rule by a centralized authority that determines all social policy, then Capitalism is a gateway to Communism.
In any Capitalistic economy, the largest corporations will continue to expand, and take over smaller corporations.. In time the corporations will have more power than the Government, and they will make policy behind the scenes.
Once the large corporations have all of the Power, they use the State as a proxy, and after a time Capitalism makes the entrance of Communism much more feasible.
Agorism is Superior to Capitalism. Keep the Free market, but reject central currency, and economic controls.
When people say that they support Capitalism, they mean that they support a Free Market, and by no means do we have a free market.
Agorism.