True. Proposal of parent could be made more realistic by making sure only few things like bill of materials, resale items and personnel costs can be deducted. Companies already keep track of all these things.

You will have to go after financialization tricks, where healthy companies get loaded with debt, weird tricks with assets and all the stuff the finance industry comes up with that has nothing to do with core function of the company. Now imagine the powerful lobby you have to work against.