Earlier quoted context omitted.
You can't "make it for everyone" before you figure out how to make it in the first place.
Then fund a nonprofit research agency rather than a for-profit productizing company. Lots of countries have public healthcare systems who could administer life-extension treatments universally if they're not locked down and treated as proprietary, for-profit products!
Sorry if I'm being harsh, but seriously, "make it for everyone"? Who is that even directed at, god? It's not like post-scarcity and immortality will be the work of Larry Page or anyone in isolation who could take it upon themselves to do it altruistically.