Because trash disposal is mostly done with the cooperation of cities and urban areas. Those who suffer when it is done poorly are the poor. Those who make the big profits are the contractors, who are tycoons and refuse to change because they think it will cost them profits, which it probably will, and should.
Just wait and see how this develops in the future. You will see no Republicans for 100% recycling, just as you see none saying a single bad word about fracking, mountaintop removal or burning tar sands oil and coal.