It takes a lot of effort to unravel such a huge mess. It's impossible to do cheap. The corporate structure has more than 100 legal entities around the globe in

It takes a lot of effort to unravel such a huge mess. It's impossible to do cheap. The corporate structure has more than 100 legal entities around the globe intentionally designed to obfuscate what's going on. So you need domain experts in each country along with experts on unraveling the structure. In the end, for this particular company, it doesn't matter. The IRS has filed a claim for $30B+ in unpaid taxes. There's nothing left for creditors.