I'm suprised this scam is still around but the article did mention how it blew up the last time when a new generation of AIDs drugs ruined their assumptions. Not a suprise that DBRS is rating these products. They were the only agency that rated those disasterous asset-backed commercial paper in Canada with a AAA while S&P and Moody's wouldn't touch them. Sounds like history is going to repeat itself. They still have outstanding lawsuits over rating those ABCP.
"If the computer models were wrong, investors could lose a lot of money." Remember that Canadian David Li who created that formula that blew up Wall Street.
http://www.crimes-of-persuasion.com/Crimes/Telemarketing/Outbound/Major/Investments/viatical.htm