There's a stromal stem cell treatment that's been developed, went through very successful human clinical trials, and so will likely become standard practice for everyone to heal age related degeneration; it won't be a daily use, recurring monthly revenue stream however, so pharma industry isn't going to push it.
Even once a lifetime treatments like vaccines represent a significant customer base as new people are born every year.
The reality is stem cells alone don’t fix aging, stuff like rates of cancer more inherent than can be cured by such things. Stem cells might possibly slow or reverse bone deterioration etc which would be a massive boon, but this stuff isn’t easy or risk free.
