[libertarianPA]

Most of the corporations are public

Controlled by private investors.

On top of that, they exist at all at the pleasure of FedGov and their charter to existence could be revoked at any time

How often does that happen? You think they'd cut off a big chunk of their money supply?

[RightWhale]

They could. Anything is possible in DC. For example, the never-ending campaign finance reform is all about corporations and the desire of Congress to remain independent enough to step on and squash the corporations some day if the existence of corporations becomes intolerably obnoxious. Creating obligations such as retirement programs that cannot be fulfilled and must be taken over by FedGov could be one of those things that makes continued independence and personhood of corporations questionable.