I really all comes down to "Redistribution of Income" and who has the "VOTES". The Dems just analyze income, age, population distribution etc., then formulate a variety of policies to insure that a majority of voters are "Takers". "ROI", short for "Return On Investment" may come to be political shortspeak for "Redistribution Of Income".
"Medicare to Base Fees on Income"
http://www.freerepublic.com/focus/f-news/1698641/posts