Pretty much on the money, crab!
The oil comanies will only do what they NEED to do as far as it gets them out of the responsibility loop then they can blame the operator for the mess if there is one.
They are the regulators of the industry (oil) but also play the local regulations game where if a local law/reg is more favourable then it goes into practice.
After all, if you pay more for services then you have less profit to post.