Well, one problem is that my spouse hit that before he was 20. That was 40 years ago. During those 40 years he designed robotic assembly lines, invented a new electronic instrument, and taught many people to play musical instruments. So I’m not sure that his life post-medical disaster was entirely worthless to society.
What do you say to someone with, say, cancer when they hit the lifetime cap midway through treatment? Too bad, so sad, go off and die?
If someone has hit the life time cap and comes down with something contagious - say, ebola or smallpox (yes, I know that one is unlikely) - do we not treat them and simply leave them a risk to the rest of society, or do we quarantine and treat them for the benefit of the rest of us?
I know a gentleman is on his third set of kidneys. This has given him an extra 30 years of life during which he has been an entrepreneur and he currently employs about 8 people. When he dies his business probably will, too, leaving those people without a job - I dunno, maybe paying $20,000 a year to maintain his new kidneys is worth it to keep 8 other people employed year after year? (I am certain the owner has cost more than $2 million in his lifetime what with two organ transplant operations and the dialysis that proceeded both of those). Sure, he might have cost more than $2 million… but if over a lifetime he generates 10 times that is that really a bad trade?
I can’t help but wonder if part of your assumption is that once a person costs that much they’re helpless/useless/don’t have much life left anyway. That’s not the case. Nor do you consider the knock-on effects of maintaining someone like an entrepreneur who generates multi-millions per year and keeps other people employed.
There are a LOT of ways you can blow throw $2 million in medical insurance in a life time. Be born with a heart defect and eat most of that limit up, then be faced with a severe traffic accident and … whoops! Well, if you hadn’t had that birth defect we could have reduced those two compound fractures, treated the infection, and replaced your broken teeth but your hour in the ER made you exceed your lifetime limit so rather than fix your very fixable problems we’re just gonna let you die!
Honestly, you don’t see the problem here?