For mortgage companies that were hoping to go public this year, they might as well forget about it. As one industry analyst put it: “The IPO market isn’t even on life support. It’s just plain dead.” Although many privately held mortgage firms are enjoying a strong year in both lending and profitability, the initial public offering market is dormant for three reasons: Nationstar Mortgage, Ocwen Financial and Walter Investment Management Corp. This year, the once “big three” nonbanks have paid...