The same goes for any longevity therapy. The billionaire-backed company that develops it first will spend any further amount to keep it to themselves and control it. Imagine owning the only fountain of youth, what favors could you buy with it? Who could you keep loyal? It won't be expensive, it will be impossible to get without kissing the ring, and it will be taken away if you step out of line.

Whoever controls the fountain of youth controls the world. Literally, the entire world.