Its not that they will die, its that they are dieing now and voting less. Your cohort doesn't vote very much, and as they get older they'll fall into the same trap. The poor with little think everyone should share. As they acquire wealth, they start to feel they should keep what they earned. They always think it's different for them for all the particular hardships they had to endure at youth/poor. Yes people will inherit houses. Jobs will be finally passed to the next generation as people retire. There will still be plenty of poor elders, just as there are now. The following generation will have it worse in some respects - so you'll have something to lose, so you'll think you should be have the right the keep your own and not share. And you'll get frightened as you become physically weaker and less mentally capable - you'll value your security over the notion of change. You'll start to see how those protests that sometimes get violent) should be made to go away so you can keep your status quo.
I really wish it wasn't the case - I had high hopes for my Gen X cohort. We seemed to care about the environment, feeding the starving, being flexible regarding sexual orientation, etc. But now we're becoming part of the problem. I see it in myself. I want a better society for everyone still, but I like my house, and I want lower property taxes. I don't want our capitalist system to collapse as I've managed to save up money for retirement and can no longer 'rough it' as easily if I lost that. I don't want fascism and I've voted left my whole life, but I can still see the shift in myself - and I recognize it in others more. So don't throw spun stats at me. The fact that as boomers are voting less, we still have right wing governments means the trend is continuing.