The government preference isn't important, citizen preference is.

As to what they can do... it's a range from info to painful, but they can choose a range of options from serving up interstitials in a localized language that explains the issues, problems, and privacy and security implications... all the way to deny service.

If the citizens demand access to those services, or find it offensive that their privacy and security is being violated and circumvented, they will take action.

And these companies can help orchestrate, just as we did with SOPA/PIPA.