I think most of these problems could be solved through contracts. A contract for purchasing Parent Co.'s HR, legal, and compliance expertise for child co. And

I think most of these problems could be solved through contracts. A contract for purchasing Parent Co.'s HR, legal, and compliance expertise for child co. And a contract for sharing technology infrastructure. The terms and pricing of the contract would likely be strictly regulated to prevent preferential treatment and encourage a clean separation over time. I'm not a lawyer though, so who knows.