You just define "advanced" as not "affordable" and your statement can be true forever!
Except of course, that's nonsense. mRNA vaccines are super advanced and available for a majority of humans. And tech drops in price if it's popular enough.
- Insulin isn't crazy expensive outside the broken US system
- Let's assume it was, or some other medical advance was, so what? A few examples of something only very slowly going down in price doesn't change the fact that a lot of things DO go down in price or just exists at all due to basic science being done.