[astrange]

I believe Marx's thing was "the tendency of the rate of profit to fall", not "the tendency of the rate of profit to rise because of greed".

[js8]

Isn't "the tendency of the rate of profit to fall" what ultimately prevents new companies to enter the market, causing "the tendency of the rate of profit to rise because of greed" due to price collusion of existing companies?

[astrange]

There's no correlation between price increases and industry concentration in the last few years.

https://chrisconlon.github.io/site/markups_pnp.pdf