The US has way too much space for incineration to become more cost-effective than just dumping it in a giant hole in the ground.
> The Mobro 4000 was a barge owned by MOBRO Marine, Inc. made infamous in 1987 for hauling the same load of trash along the east coast of North America from New York City to Belize and back until a way was found to dispose of the garbage. ...
> In 1987, the City of New York found that it had reached its landfill capacity. The city agreed to ship its garbage to Morehead City, North Carolina, where there were plans to convert it into methane.
I did some napkin math and concluded that it's a non-issue. https://news.ycombinator.com/item?id=38407111
or ~3 square kilometers