What changes have taken place between modern capitalism and traditional capitalism?

The economic crisis before the war was mainly caused by market monopoly, and Roosevelt's New Deal initiated the state's intervention in the economy, so the changes before and after were mainly reflected in the position occupied by the government in the capital monopoly.

Traditional capitalism is completely controlled by capitalists who master the means of production, while modern capitalism more embodies the role of the government in market regulation, especially in the golden age of post-war development of western capitalist countries. State monopoly made post-war countries develop rapidly, especially Germany and Japan, whose economic level even exceeded that before the war. At the end of 1970s, the capitalist world broke out again, and state monopoly no longer met the requirements of the capitalist era. Modern capitalism has gradually changed to the direction of capital-led market and government-regulated market, which is similar to China's macro-control. As far as class is concerned, it can only be said that democracy and the rule of law in the west are more perfect and the proletariat is growing, but the bourgeoisie still dominates. But at this time, the capitalist system is very mature and close to socialism in many ways. As Marx said, the ultimate form of capitalist development is socialism.