Most things go to the wealthy first, but usually it's worse quality and very rapidly becomes democratized and improved. Consider how great life was 100 years ago for the wealthy compared to the average person today. I would definitely prefer air travel and computers to being wealthy but stuck in the past. Almost every technology has gotten much better when it becomes mainstream.
If treatments become available, the pressure to make it available to everyone will be immense. Consider how much of a government budget goes to health care and how much productivity and resources are wasted on those who have exited the workforce due to age. It will be economic and political suicide not to ensure everyone gets access to anti-aging treatments.
As for a ruling class, the problem exists with or without anti-aging treatments. We're already moving to a world where more wealth is concentrated with fewer people. The solution to this is to demand taxation on wealth and enforce it globally.
If treatments become available, the pressure to make it available to everyone will be immense. Consider how much of a government budget goes to health care and how much productivity and resources are wasted on those who have exited the workforce due to age. It will be economic and political suicide not to ensure everyone gets access to anti-aging treatments.
As for a ruling class, the problem exists with or without anti-aging treatments. We're already moving to a world where more wealth is concentrated with fewer people. The solution to this is to demand taxation on wealth and enforce it globally.