I see great potential in extracting the responsible enzyme and reproducing it by biotechnological methods, but we still need to wait for further results.
The biggest problem are still we ourselves, because of our simply uncivilized behavior to spread our rubbish all around the planet! It always annoys me so much to see all that dirt everywhere.
I agree people are the main thing we need to be concerned with when we think about trash that is not very biodegradable.