I imagine if they would, they would put more money into the problem: either fund linux development or created more of a market for commercial server operating systems (which can still be open source, at least in some interpretations of the term), for example.
May be US (as de-facto main government-level actor in IT and internet) could create voluntary certification that opened up companies to such liabilities? Small startup operating from a garage — no certification necessary, but users are aware that no one is guaranteeing anything. IBM? Level A certification which they advertise everywhere, with billions of dollars in potential fines.
I even feel the breath of having Ada (the language) enforced over all of us again, and similar ideas...
(Not that Ada is so bad as a language, it's more about the ideas of enforcement and top-down control...)