As for cost, surely you can ask Ford's lawyers who worked there in the 70s to give you a good calculation on life vs recall costs.
That is why Samsung push update to disable note 7 even after recalling them.
In Germany we let the Kraftfahrtbundesamt handle this. You are required by law to keep your address updated with the authorities, and all vehicles have to be registered to get a license plate. When a recall for safety reasons happens, the Kraftfahrtbundesamt writes a notification letter, and if you do not respond in time with evidence of having the recall issue remediated by a qualified shop (or doing it yourself and getting a sign-off from a licensed inspector), eventually they write to your local DMV office that can ban your vehicle from the roads, and if you miss that the police shows up at your home and physically removes the license sticker from the table.
And heaven forbid you get actually caught driving the car after having gotten the notification letter from your local DMV. That's automatically felony territory. Our authorities really, really do not mess around.
[1] https://www.kba.de/DE/Themen/Marktueberwachung/Rueckrufe/rue...