The Forbes 500 is still, as The New York Times described it in 1987, "a gossipy ranking of the country's richest people." Increasingly, those people are from the financial industry. Finance -- banking, investing, hedge funds and private equity -- accounted for 14 percent of the world's 500 richest people in 2015, as listed by Forbes on Monday. Finance has not always had such a big share of the uber-wealthy.