They do best when they can put their capital to work, the government and the fed have created a system whereby capitalists are best leaving their money in cash.
There is literally no place anymore in the market for a person to invest cash and expect a reasonable rate of return. We are at the tail end of Keynesian policy, rates at zero, and a race to the bottom, with no reasonable place for someone to invest money and expect a return. Thus the stagnant economy, now we are either going to go sideways for a number of years, or the market will dip hard in order to clean out the ineffecencies created by 30 years of easing.