According to that line of thinking, older generations should also stop receiving support from welfare and social security. Let them sell their houses and leave

According to that line of thinking, older generations should also stop receiving support from welfare and social security. Let them sell their houses and leave their communities if they can't afford to acquire the goods and services they need through consensual exchange. And yet very few will accept elderly starving in the streets en masse because their pensions were gutted or went bankrupt. And so some measure of intergenerational agreement is necessary, where each generation provides for the next.