Yes we could evolve to live longer, but as you point out we are not, and science is no where near rewriting the code to fix that in designer babies let alone already old rich pricks.

Naturally it would take a long time and it is hard to see how we would evolve there, but parrots, some turtles, tortoises, sharks, sturgeon, and idk what else have done it.

Greenland sharks live over 500 years I think I saw on a post on the big site.