The big lie about capitalism is that everyone can be rich. That’s impossible. Capitalism works only if the vast majority of the population are kept poor enough to never quit working, are kept poor enough to accept distasteful jobs society cannot function without. If everyone were a millionaire, who would empty the trash or repair the sewers? It follows that the poorer the general population is made, the greater the worth of the money held by the wealthy, in terms of the lives which may be bought and sold with it.
Markets also have a very bad psychological effect. They drive people to a conception of themselves and society in which you’re only after your own good, not the good of others and that’s extremely harmful.