n 1. A person who is a supporter of capitalism.
The term “capitalist” does not just mean “rich industrialist.” It also means “anyone who believes/practices the tenets of capitalism.”
1.(politics, uncountable) a socio-economic system based on private property rights, including the private ownership of resources or capital, with economic decisions made largely through the operation of an unregulated market.
2.(economics, uncountable) a socio-economic system based on the abstraction of resources into the form of privately-owned capital, with economic decisions made largely through the operation of an unregulated market.
3.(countable) a specific variation or implementation of either such socio-economic system.
– Wiktionary (emphasis mine)
Small business owners ARE capitalists.
Besides, many industrialists are not TRUE capitalists. Anyone who has accepted a government bailout or has government assistance in creating a monopoly (whether a total or functional monopoly) for themselves is NOT a capitalist. They are not existing in the free market and are attempting to subvert it through the use of force, in this case government funding or legislative action.