Yes, and that was my point. Staunch supporters of capitalism often own capital. A great example is home ownership, which people use as an investment platform. Using your home as an investment platform means you have an interest in maintaining the value of your investment, which leads to things like NIMBYism or voting against measures that might help the city, but devalue your property.

The only way you could possibly maintain free market capitalism is by, ironically, putting in rules preventing people from using the free market in their own rational self interest. Which is why I believe healthcare can't be fixed by making it free-er, simply because the rational self-interest of insurance companies is against that of the insured.