In the UK you get a minimum 12 month ban, an unlimited fine (which are based on income and have been quite big in the past (Dec of Ant and Dec got an £86000 fine). I don't think this approach is uncommon in Europe.
With a valid employment reason (such as snow plow operator) you can get an employment only permit. Your insurance will easily be $1000 a month just for basic liability. I’ve known a few guys in this situation.
The bigger problem is people who are judgment proof and don’t mind spending some time in jail. They just drive drunk over and over and don’t care if their car (which is often a relative’s) gets impounded. They have no valid licence and no insurance. Short of permanent incarceration, there isn’t much they can be done about such people.
Yep, when you get down to this root fact, it's nearly impossibly to _actually_ stop someone from driving a car. If you make insurance mandatory, they will still not buy insurance. If you revoke their license, they will keep driving without it. If you fine them, they just won't pay. If they go to jail for it, they'll resume driving when they get out.