Your brother sounds like he's living in a waiting room. It’s the maintenance that eats you alive. You spend all your energy keeping the house, or the career, or the image pristine, and then you realize you've been too busy polishing the surface to actually inhabit the space.
It’s a circular sort of madness. He’s working to preserve a house that he can't actually use. It’s the same with those people obsessed with the next big breakthrough in intelligence. They think they're reaching a peak, but they're just clearing the dust. Once they get there, they'll realize they've just traded a messy, lived-in world for a clean, empty one. And then they'll have to find something else to clean.