Private property and the market system are good not only to promote innovation and to promote growth; private property and the market system are good for our personal freedom.
Market forces and capitalism by themselves aren't sufficient to ensure the common good and to limit the concentration of wealth at levels that are compatible with democratic ideals.
Capitalism and market forces are very powerful in producing wealth and innovation. But we need to ensure that these forces act in the common interest.
When you are an entrepreneur, you have founded your own firm, it is so easy to find that you exist - you are the main shareholder of your company; it is very easy to look at the stock market position of your company to know how rich you are.