Earlier quoted context omitted.
you don't think people exchanging goods and services using money as an intermediate exchange (aka capitalism) can be a net-positive? Because any other aspect of our current formation of capitalism is negotiable. We can regulate to counteract negative corporate behaviours (though that has its own set of issues) so that companies are working for the benefit of the populace.
I don't think money is a nessesary ingredient of captialism (though it is immensely helpful). Money also exists in most forms of communism. Capitalism is more about private ownership of the means of productions, with different companies competing against each other on the market. Monopolies run against the spirit of capitalism. Regulated markets on the other hand are fine as long as competition is ensured.
That existed before capitalism - in feudalism, for example. It's true in the context of Marxist analysis of capitalism as that's how Marx decided to frame capitalism, but it isn't capitalism's distinguishing feature.
> Monopolies run against the spirit of capitalism.
Effectively, yes, which is why we should prevent them by either public ownership of natural monopoly resources (public road ownership, for an example to wind up the libertarians) or regulation.