At first only rich people beneficiated from it. But thankfully today medicine advantages are better distributed. We are not equals by any means and some countries are lagging behind, but it is better.
Link to my other comment: https://news.ycombinator.com/item?id=39080399
I have good hopes the same pattern could occur here.
If it is something very expensive and an overnight discovery, then it is likely that a dystopian era will occur... Just imagine some kind of tyrant (as a reference to the fable!) reigning over a country for 100+ years.
But it could also be somewhat like what happened with medicine: the sum of smaller improvements, some more expensive than others, years after years.
Inequality is the price of innovation, but it doesn't have to be paid forever.
Now imagine a world in which no one is immortal for 99 years, but on the 100th year everyone gains immortality at once.
The latter is vastly more equitable, but to choose such a world would be horrific in cost of lives.
I can imagine the dystopia that would come from an undying elite ruling over a mortal underclass. However, in any situation short of that extreme, I would never promote anything that would slow the search for immortality. Especially not for the mere bog standard modern conception of equity; crab-bucket mentality here will only serve to keep us all scrabbling in the dirt.
The rising tide should raise ALL boats, otherwise inequitability will lead to social instability as seen througout human history so far.
I don't think there's a moral argument against expensive cancer/organ treatments being made available in wealthy countries; it doesn't seem like any progress on treating those diseases will be made at all if the treatments can't be made available, regardless of their extreme inequity.
I don't see that it's inevitable at all. (a) The solution may be very affordable. (b) Any government that does not get the treatment to all citizens is likely be voted out or overthrown.