Quite. The stock markets are what provide capital for companies that pay wages to their employees. Pension funds invest in the stock market, as do popularly priced investment funds. There is also nothing immoral in earning interest on money one lends, given that there are risks involved (see the past week!), and morally it is exactly the same as buying government bills. Some people invest in real estate, some in state bonds, some in the stock market, some in post office savings that give a small interest. In any case, today in any developed country most of the population is "capitalist" to some extent.
Besides, in other threads I discover that PFM members own Porsches, three Mercedes', V8 Range Rovers, not to mention 40,000 Euro stereos, 10,000 Euro wrist watches, and have holidays that must cost several thousand Euro per person. Why is there no moral outrage about that?