> landfills in the 3rd world will be inundated by more hardware which could be still perfectly useable if its life didn't depend on the wishes of a single company.

Well that's a silly comment, because by choosing not to make more then there would actually be fewer kinects in landfills than if they had decided to continue manufacturing. The decision to "build more" has absolutely nothing to do with folks deciding to throw away the ones they've already bought.