That is a more realistic view of manufacturing in space. Robots? Sure. I don't see "millions of people" doing that though. And so far I've not heard of what or

That is a more realistic view of manufacturing in space. Robots? Sure. I don't see "millions of people" doing that though. And so far I've not heard of what or where they'll be mining. I've heard of getting water from comets but that's not really a profit maker either (unless maybe you make liqueur with it) so unless you've spotted one nearby made of precious metal I'm still not seeing the motivation for this.