The basis of capitalism is private ownership of production, by definition.
The basis for why this is at all acceptable as a system to organize society is that competition, government restrictions, etc, whittle down private power to somewhat tolerable levels. There must surely be a better system which we haven't thought of yet though.
The basis for why this is at all acceptable as a system to organize society is that competition, government restrictions, etc, whittle down private power to somewhat tolerable levels. There must surely be a better system which we haven't thought of yet though.