There isn’t a lot of doubt about the increasingly top-heavy nature of the mortgage business, but industry experts are divided over the role government policy has played and its impact down the road as Dodd-Frank Act reforms take root. A decade ago, in 2001, the top five lenders in the market accounted for 37.6 percent of total originations and 36.6 percent of mortgage servicing. By the end of last year, the top five lenders had a combined market share of 59.1 percent in originations and 55.2 percent in mortgage servicing.That trend could be exacerbated by the increased compliance ...