Would it not be reasonable to assume that the first anti-aging therapies that are approved will go to the privleged? Then they would be commodified and provided to the less economically fortunate.
If a drug or therapy truly does extend life span I can also see systems forming where the few want to keep it to themselves and away from the many. One way or another I can’t imagine this being the the top priority of anyone but the most vain (personal opinion) so I would not associate myself with such research is all.