The moment people realize that the rogue network was being malicious, they'd stop trusting it - ignoring all announcements it might make. It might take a few hours for order to be restored, though.
It might work for somebody like China, where they have two network interfaces, so can make all Chinese networks think they are Google on one interface, then forward things on to the real Google on the other. There might be a good reason for them to do it, too, because they are also likely a trusted CA, so could forge SSL certs, too.