Only THREE PERCENT of the very rich are entrepreneurs. According to both Marketwatch and economist Edward Wolff, over 90 percent of the assets owned by millionaires are held in a combination of low-risk investments (bonds and cash), personal business accounts, the stock market, and real estate. Only 3.6 percent of taxpayers in the top .1% were classified as entrepreneurs based on 2004 tax returns. A 2009 Kauffman Foundation study found that the great majority of entrepreneurs come from middle-class backgrounds, with less than 1 percent of all entrepreneurs coming from very rich or very poor backgrounds.
[Paul Buchheit, Common Dreams]