Earlier quoted context omitted.
> Rising rare element prices might change this in the future. They can't. The mining of rare elements isn't constrained by resources, only cost. Setting up the kind of infrastructure needed for REE recovery would always cost more than mining, so if the prices start going up again, mining will just be expanded.
I don't quite understand how it's cheaper to dig massive holes in the ground and process that dirt to extract REE than it is to grind up all the waste electronics and extract copper, tin, gold, REE from that.
REE is usually used in small amounts in alloys, or especially in electronics, in very thin films and such. Because of this, simply shredding it doesn't quite do it -- after you ground it, what you have is basically a very poor ore of the material, and rather than extracting things from it, it would be cheaper to just get better stuff from the ground.