"So far it has been true" means that it has never been untrue; but "usually" implies that it has been untrue at some point.

Capitalism is much more than simply using money. By that definition, every society since the clamshell has been capitalist.

And being a capitalist is much more than simply living in a society owned and controlled by them. By that reckoning, we're all heterosexual white male Christians who love wars of aggression and hate the environment.

"Capitalist class" is capitalists in the aggregate. Capitalists are the people who privately own the means of production and hire wage laborers to produce by those means products which the capitalists sell for a profit.

If the above comment is any indication of your understanding of Marx or communism, then it's little wonder that you self-appointed owners have run this article into the ground. I'm guessing your understanding is received thirdhand via the LvMI.