Yes, that's essentially my point.  When times are good, doing so could cause a severe global recession because of the uncertainty about future institutions and conditions for doing business that such a takeover would create.  But if you're already in a severe recession, like we are now, there's not really much harm that could come of it.  Banking is functionally a form a governance as much as government is, and government is as much an arbitrator of credit (trust and commitments) as banking is, so one can largely do the work of the other with the difference being in terms of distributions of benefits and efficiency questions stemming from the principal agent-problem.