It depends on whether or not humans are needed
I believe that once we beat the gravity well it gets pretty easy and pretty cheap to move things around the solar system. I can see the possibility of mines on asteroids and moons as far out as Jupiter. It could become cleaner and cheaper to mine materials in space that are still plentiful on earth
If robots can do it they will. If humans are needed they will go and some will live there in artificial habitats. It seems that we always find good reasons to have boots on the ground in spite of technology.
My definition of CATS is the ability to move tonnage to space at a price close to the cost of moving tonnage on earth a thousand miles by truck. The big question is whether we will ever have that ability, or will it be as elusive as fusion, advanced nano-tech and many other dreams.