This is what I tried to explain in one of my post's by saying "You know that OWCP has a subsidiary?"
One of the ideas of a subsidiary is risk reduction.
The parent-subsidiary model mitigates risk because it creates a separation of legal entities.
Just because debts occur with the subsidiary, that does not always equate to the parent company incurring losses.
I believe though, in cases of bankruptcy, that if a court (at least in the USA) can prove that the parent and the subsidiary are legally and effectively one and the same, then it could "pierce the corporate veil".
Again, I am not a lawyer by profession. I haven't reached out to one recently. Please do your own DD.
But I will be talking to one in the coming weeks. I am more than happy to throw this question to them.
Best of luck.