Capitalism is a system in which bank play a central role as well as financial institutions. Capitalism without banks is not capitalism as it is based on debts and loans. You cannot have capitalism without banks, how would that work? If someone collects stuff, with which he does his own job, you would call it capitalism, I would call it communism. The difference is that in capitalism an entity can own the means of production and pay a salary to people in order to make them work. In communism this cannot work, the idea is to create small entities (Soviet) which democratically manage the community on the edge, not in the central government as in capitalism. Capitalism without a central bank is still capitalism, where few people can own so much capital that they provide means for productions for people they hire for a misery salary