I feel like that the same for the fracking companies -- the small no-name companies have more of an incentive to do a poor job because they are under more pressure to make money or go bankrupt and not clean up the sites. Whereas the bigger companies have a brand to worry about and also they will use their muscles to force regulation on their competitors.

Not saying its good or bad - just how it seems. Companies out of the limelight and too small to notice have more leeway to cheat.