You're making this very hand-wavy calculation. Hardly any 45 year olds were dying of hep C, even the older ones had lots of comorbidities & other risk factors, which is what one would expect for a disease acquired through intravenous drug use, and often transmitted in prisons or unsanitary tattoo parlors, and the drugs don't have a perfect cure rate.

In any case it's nearly irrelevant because this was a completely post-hoc rationale for pricing this drug. I am not opposed to large cash bounties for major advances but our current system is not remotely designed around that principle. Forgive me for thinking you are defending the wrong system.