"They" (whoever) would have to set up a completly new Net (Web) not compatible with the old. All global electronic comercial traffic (banking, online shopping, internet tv etc) would have to switch to the "new+better+safer+goverment approved" Internet v2.0...
Everybody will get a RFID-"login"-chip under his skin with all his biometrical and other personal data, which also functions as pass, driving license etc.
...ALL in ONE...
Brave New World