They don't need to be on internet. They just need to be available remotely. Simple VPN would've solved the issue entirely (...well, up to the moment when they won't update that, but updating VPN is far cheaper than commercial refrigerator controller I'd imagine)
Europe doesn't need to continue using fax machines and bury its head in the sand.
There's also the option to adopt digital technology and just not be an idiot about it this time since the price of intelligence is now effectively 0.
Or, France can continue preventing any productivity increases from technology and watch its social systems continue to collapse.