Yep, not to mention what you can do with complex conglomerates. For example, one should take a look at the intra-company eliminations that the giant pay-viders do (e.g. UnitedHealthGroup, owner of insurer/payer UnitedHealth and healthcare provider Optum)

Insurers are margin-capped, but wouldn't you know it once you own a PBM and the providers, you can make revenue, holdings, pricing power, and market share rise arbitrarily while never producing a profit beyond the cap.