If you could cure it, you could charge more than treatment - because it's more valuable to the person getting cured. If you had cancer with a 5 year expected survival rate, would you pick (arbitrary round numbers)
$10,000 per year in treatment to manage it but you've still got cancer.
$55,000 paid over 5 years, $5000 more than you would pay to just manage it, but you also don't have cancer any more.
If you could cure it, you could charge more than treatment - because it's more valuable to the person getting cured. If you had cancer with a 5 year expected survival rate, would you pick (arbitrary round numbers)
$10,000 per year in treatment to manage it but you've still got cancer.
$55,000 paid over 5 years, $5000 more than you would pay to just manage it, but you also don't have cancer any more.