We do exactly that for other traffic violations like reckless driving, running a red right, and making illegal turns. If there's no pattern of negligence the violators are hit with a small misdemeanor that only has an impact in transportation industries and then go through a hefty fine - not the thousands of dollars in court fees and extraordinary loss in personal income that often just aggregates alcoholism.
I don't think you're defending victim's livelihood. I think your policy is just cruel vengeance - the opposite of justice.
I never drove home piss poor drunk but I've probably drove above the 0.08 limit; certainly above the 0.06 de facto limit. I imbued a pitcher over an hour and a half and could give two craps about what the law states; I could drive just as well as I drive in the morning when I'm tired. Virtually every drinker in the country drives near or above the limit. They just don't know it. For citizens of many states in the mid-1990s it wasn't considered drunk driving to be at 0.10. You are just going along with the law in the face of logical consequences. If the law tomorrow dictated that driving above 0.02 shall now be considered 'drunk driving,' you'd probably parrot that line, too.