That might or might not be the case, however I doubt it's only BP that has inefficient management.
For the most part it's down to regulation, in the UK after the
PiperAlpha blaze there was a lot of regulation changes in regards to how rigs were regulated. So much so a lot of smaller contractors found the industry too costly to continue facilitating. This caused a number of UK "North Sea" sites to start getting closed down, not so much because of the absence of the resource but because the regulation was tightening on the whole industry.
I used to hear stories of how the rigs operated prior to regulation. A persons life on the rig was worth less than a hour or two of an operation being shutdown, purely because of the oil being worth so much.
I heard stories of guys falling down the drill shaft and not being pulled out, so they just continued drilling with him in, stories of rig cranes having unsafe loads that fell causing cables to be pulled into the ocean which ripped across a riggers leg, whipping his boot off with his foot still in it. There was then of course one involving how welders at the bottom of the rig accidentally filled the enclosed stairwell with vented gases causing a number of other riggers to get monoxide poisoning.
You would never hear about any of that during an Oil companies stock meeting with shareholders back then. To be honest drilling oil back then was as dangerous, if not more dangerous than serving in the Armed forces (but the money was better).
Regulations got passed however in the UK and all this craziness had to stop, but this meant for such companies they were left with overheads. So they would look abroad to places lacking regulation to be able to meet their targets.
The US for a while has lacked various regulations, mainly because it's seen that regulations can slow business and it's the main reason you're left with the "Sue" option. Namely you let companies run amok and only "Sue" them when you have to, rather than regulate them, slow their corporate progress but maintain some essence of safety.
So I guess you have options, yeah by all means cry "Sue them!", but will you ask for regulation which might slow business so that it doesn't happen in the future, or will you just chance that companies are going to be so scared of being sued that they will regulate themselves? (Bean counting dictates, There is a lot of money to be made being unsafe, perhaps more money than what it would cost to deal with being sued. Obviously it's up to the shareholders in the long run to decide to take the risk with the beancounter suggestion or actually do things properly.)