Of course we all want containers to be more secure because that would give us more bang for the buck on installed iron if we have better security guarantees tha

Of course we all want containers to be more secure because that would give us more bang for the buck on installed iron if we have better security guarantees that shift the risk assessment for deployment. But I doubt that containers will ever be as secure as virtualization, nor will virtualization be as secure as a separate machine. In the end it comes down to your risk appetite.