Fredrik Erixon and Björn Weigel write,

In 2013, natural persons owned only 40 percent of all issued public stock, down from 84 percent in the 1960s. And if we take all issued equity, the trend has been even more pronounced. In the 1950s only 6.1 percent of all issued equity was owned by institutions but, in 2009, institutions held more than 50 percent of all equity.

…the shift from capitalist ownership to institutional ownership has undermined the ethos of capitalism and has created a new class of companies without entrepreneurial and controlling owners. Contrary to some expectations, that has not created new space for free-wheeling and entrepreneurial managers to act on their own judgment instead of following the instructions of owners. Rather, managers are subject to a growing number of rules and guidelines designed for and by risk-averse owners with little knowledge about their investees.

I am not convinced that the current system is as dire as the authors make it out to be. Fifty years ago, it was difficult to keep a large firm from throwing capital at investments with poor returns. Today, reallocating away from firms with poor opportunities is easier.