I'm just watching Fallout on Amazon Prime TV. I had no previous knowledge about the (video game?) franchise, but what you describe is part of the shows' premise

I'm just watching Fallout on Amazon Prime TV. I had no previous knowledge about the (video game?) franchise, but what you describe is part of the shows' premise. At one point a character makes a point that these "vaults" are a refuge of a elite, the rich and connected, and does not represent the real world that exists on the face of the Earth.