I think you are still on the Deepwater Horizon thing, a judge had this to say about that.

"In September 2014, a US district court judge ruled that BP was primarily responsible for the oil spill because of its gross negligence and reckless conduct."

But my comment was related to parties that break their empire into little bits to avoid responsibility. And yes, the corporate veil can be pierced. No, that happens so rarely that it hardly matters.