Very little research currently goes into attacking aging directly - as opposed to handling things that are in no small part downstream from aging, such as heart disease. A big reason for poor "longevity gains" is lack of trying.
Sleeping well, eating well and exercising does work. Science about this is well-established. So why arent we?
It would not raise the life expectancy to 100 years but it would considerably reduce the health burden on the economy.
We want solutions that can be scaled and rolled out broadly, and "basic healthy lifestyle" ain't it.
I mean, sure, it doesn't scale as well as a magic pill as a business. But is certainly is O(n) with the number of people involved.
Either way, a pill would scale better across all these people.