Indexing has also gone small, very small. Although many financial institutions offer index funds to their clients, the Big Three control 80 or 90 percent of the market. The Harvard Law professor John Coates has argued that in the near future, just 12 management professionals—meaning a dozen people, not a dozen management committees or firms, mind you—will likely have “practical power over the majority of U.S. public companies.”
I'm afraid my brain function is too puny to truly fathom the weight of this fact. But my gut is screaming yikes.