I don't think the government could even get a law passed requiring conversion to 1950's era industrial controls. The unpleasant reality is that it would require the private-sector to hire and retrain hundreds-of-thousands to millions of people; which is something large-corporations and Wall Street simply would not stand for.
The alternative is to develop a new more secure internet - which is one idea being considered. I can't say if this is even feasible or not. This is a thread where we could use subject matter expertise of dormant council member selil. But all things infosec and cyber are hot right now, so I imagine he is a busy man.
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