Economist Michael Roberts argues that the fall in the rate of profit is the ultimate cause of capitalist crises.
The US rate of profit 1948-2015 | Michael Roberts Blog
https://thenextrecession.wordpress.com/2016/10/04/the-us-rate-of-profit-1948-2015/
Oct 4, 2016 - Since then, the US rate of profit has been static or falling. And fourth, since about 2010-12, profitability has started to fall again. Finally, the fall in ...
What is the tendency of the rate of profit to fall? | Socialist Review
socialistreview.org.uk/371/what-tendency-rate-profit-fall
Marx defined the rate of profit as the ratio of profit to investment. A long-term feature of capitalism has been the tendency for this rate of profit to fall - for booms to ...
The Falling Rate of Profit - Marxists Internet Archive
https://www.marxists.org/archive/hardcastle/1960/rateofprofit.htm
In the early part of the 19th century the economist Ricardo had his own simple idea about the falling rate of industrial profit. Essentially his idea was that there is ...