What's next?
50yr education debt, 100yr mortgages, suddenly "stopping Japan happening here, just happened here". So we run the cost of a single room up to £150,000 since "your children will pay it off or it gets taken from your estate so it does not matter?".
USA education costs more than it returns in lifetime earnings, even for medicine. UK education is a joke with secondary just moved into tertiary. Over 50% of EU do not repay the debt, no doubt having found as Delft & Dresden did that a british "degree" was "superficial educational tourism".
Final salary schemes are shut and their liabilities do not need 100yr gilts, index linked are a waiting minefield of overpriced, broader gilt yields are negative real rates of return. No-one has ever sold the quantity that would make a difference, historic amounts are pretty small globally.
So what is the plan, force banks to buy the debt as they have with gilts re Basel-III, force pension funds to buy the junk. No wonder so many move offshore, it is like walking around in a room full of gasoline waiting for a bunch of smokers to give in and drop a match...