Not only in the individual case but also collectively. The holders of these bonds would stand to lose a lot of money if technological breakthroughs increased t

Not only in the individual case but also collectively. The holders of these bonds would stand to lose a lot of money if technological breakthroughs increased the longevity of the insured people. This would give them the incentive to stall or block these developments. Furthermore those with ability to stall these developments may be attracted towards buying these securities for this very reason. The scenarios of unlimited longevity painted by some life extensionists would be their worst nightmare. Given that the prevention death from 'old age' is not currently considered a valid medical goal it would be fairly easy for them stall development in these areas.