I know almost nothing about law but I would assume a large company would be insured against contingencies like this.

I remember reading something about how rich people can get 'everything else's insurance that's basically applicable to anything bad that could happen to them. Maybe its the same with companies?

You can insure almost anything, assuming you’re willing to pay the premium, and that the insurers are satisfied with their due diligence. BUT... that insurance company will look for any technicality, any little way that you failed the extensive duty to protect your insured assets, and try not to pay out.

So really, in this case insurance is just another word for “more lawyers to drag through the courts for people years, with uncertain results.”