I work in O&G and my own firm just spent the last three years hunting for and patching pipe leaks by looking for methane emissions.
This is something they've been crowing about for a while, but its been a problem for decades that only got treated as something worth fixing when the cost of aerial reconnaissance dropped. Its a classic negative externality that energy companies simply don't want to acknowledge until the price is right.
If you think this is the only case in which lax regulation has left the lid off Pandora's box, don't ask what was up with the BP oil rig explosion or look to hard into the number of gas leaks polluting the Mississippi river or... really... ask any questions at all about the state of safety and soundness of O&G infrastructure.