Unless you throw the investors and senior executives in jail how do you intend to do anything more than performative dance with these measures.
I personally think countries should start sanctioning and international warrants for all large investors and senior executives in a company if something like this happens.
But it won't happen unless US changes their stance on companies being liability shiled.
Sure it should require very exceptional cases but I know companies whose negligence has cost lives of hundreds of people, the reason they and all their investors weren't jailed is the real scam of the democraciez we have gifted ourselves.