Also, the money that was spent didn't just go to extending his life. A lot of that money was spent on pharmaceuticals where he was an "early adopter". People like him covering the massive costs of developing those pharmaceuticals are paving the road for the day when they can be available as cheaply as the vaccinations the article talks about.

Right, but her point is that had they (the author and her late husband) actually understood the costs at the time that they were making treatment decisions they might have made different ones. On the other hand, as you note, in a very real sense they'd already paid for the treatment in the form of decades of premiums.

Based on the conclusion of the article it seems that she agrees.