Comment by jawns

> We have plenty of space to put them – less than 0.01 percent of the US is used for landfill, less than 0.001 percent of Australia is, and only about 0.02 percent of Germany is.

Not all space is equally viable. Landfills need to be close enough to populated areas to make waste transportation feasible, while far enough from populated areas to avoid being a blight.

So, sure, you can build a landfill in the very center of the Australian outback, but who's going to use it?