Are you seriously suggesting that Blackrock and Crassus are examples of free-market monopolies?
Please. They are its antithesis.
Consider the case of Standard Oil, the leftist "textbook case" for capitalist monopoly. Rockefeller managed to make petroleum products, especially including kerosene, so inexpensive that it completely supplanted candles and whale oil for lighting, thus bringing light to millions and saving the whales in the process.
At the beginning, Standard Oil enjoyed a 4% market share. At its apogee, 88% market share, which, despite leftist historical nonsense, is not actually a monopoly. By the time Standard Oil was broken by progressive mountebanks it was down to 65% and falling.
fee.org/articles/the-my…
I've had this discussion with many people over the years, and I've not run into one that can actually cite a real case of a free market monopoly.
Care to give it a shot?