Reading though Mitchell's research into the discussions that were going at the time, you find early versions of many of the arguments being played out right now. Like that the best way to ensure that corporations stay on the straight and narrow is to have engaged shareholders. Meanwhile there was a lot of chatter about getting the ordinary bloke in the street to have a direct stake in the economy through share-ownership.
Most interesting to me though is a quote from the Industrial Commission in 1902 which provides an early sceptical take on how far employees could actually participate (as investors) in corporate governance:
"[I]n view of the enormous and inceasing size of units of industrial control, any expectation of an effective participation of wage-earners in the government of the great industries by any method based on their individual ownership of shares of the capital is chimerical."