Refuelling rockets in orbit would be a use case for water sourced from asteroids. Will Bezos build space colonies? Perhaps that's an impetus to mine for steel

Refuelling rockets in orbit would be a use case for water sourced from asteroids. Will Bezos build space colonies? Perhaps that's an impetus to mine for steel in space. Would it be cheaper to mine aluminium from the moon and catapult it into orbit? A lot closer than an asterood. And purer?