[simonh]

The idea that unregulated markets can lead to price fixing and cartels was not original or unique to Marx, as I and others have pointed out even Adam Smith was very well aware of it, and it does not itself imply all of the rest of Marxism.

[nickik]

Yes other classical economist talked about the subject as well. Their analysis were of course about 100x superior those of Marx. The feared the problem and worried about in theory but they did not predict the inherent centralization of all markets.

They also understood that politics often has no interest in fixing the market, as they had a actual model of political economy.