Why wouldn't it?
> Where do you get the idea that such therapies must invariably be expensive?
Because those with power and wealth will want to keep it from those who aren't as well off, and they control the pricing of it. It seems the logical endpoint to me.
I don't see them working on making it cheaper for the common person out of the goodness of their heart. And I see their desire to keep their power as stronger than their desire to worry about healthcare costs.
Maybe I'm super cynical and pessimistic, but if the cure for aging is found, I don't see it being made widely available, ever, for simple reason of power and politics. Humanity isn't at that point, and likely never will be.