Based on the prices at the local scrap yard for ferrous metal, I’m pretty confident I wont be investing in asteroid iron mining.
A few years ago my BIL gave up on a project car and called a ‘recycler’ to sell the hulk for scrap. He was shocked to be offered only $150.
It's no just what is found, but where it is located that matters
If you want to build structures in space, you need materials.
Due to gravity, transporting them from earth is horribly expensive.
Transporting materials from one location of low or no gravity to another is relatively cheap.
Smelting in space is easy due to unlimited solar power.