Reading through the several answers, it seems like the TL;DR is 1. Maybe there is toxic material IDK who wants to touch that instead of some rock 2. The indus

Reading through the several answers, it seems like the TL;DR is 1. Maybe there is toxic material IDK who wants to touch that instead of some rock 2. The industry actors who would do it only regard landfills as shiny metal reserves, and don't want/can't get the other materials one might extract from it, raising cost floor