Once they start digging the hole they figure just keep digging. Hole gets bigger, next option is to dig more as it is "hopeless" now. That is why I feel jail time is the answer, it at least stops them for a few months eventually years on repeats even if it is not a deterrent for many.
An acquaintance from my home town had multiple DUIs and suspensions in his 20s/30s. Big fines, more suspensions. He just kept digging.... no license, no insurance, kept digging. Started putting on US plates to throw the cops off, they eventually caught on to that. At one point he gave up and gave his car to his roommate who put it back on the road legally. One night multiple cruisers did a hard take-down of the roommate as they recognized the car...to their surprise it was not him and the car was now legal (kind of funny). After a decade he turned it around but by that time it was a hard go to do so as the hole was huge, most would not.