Mortgage-investing real estate investment trusts are having a field day this year, selling additional common stock – and even preferred – to the public, while nonbank lender/servicers continue to be locked out of the market. And given the fact that origination volumes could wind up 20 percent lower this year than in 2016, it’s unlikely that investors will give nonbanks much of a chance unless they can prove themselves as “disruptors” with a “fintech” bent to their operating strategy. But that isn’t...