In democracies at least, the law can be changed to reflect this new reality. Laws that don’t need to be enforced and are only around to enable pretextual stops can be dropped if direct enforcement is possible.
There are plenty of crimes where 100% enforcement is highly desirable: pickpocketing, carjacking, (arguably) graffiti, murder, reckless and impaired driving, to name a few.
Ultimately, in situations with near 100% enforcement, you shouldn’t actually need much punishment because people learn not to do those things. And when there is punishment, it doesn’t need to be severe.
There are plenty of crimes where 100% enforcement is highly desirable: pickpocketing, carjacking, (arguably) graffiti, murder, reckless and impaired driving, to name a few.
Ultimately, in situations with near 100% enforcement, you shouldn’t actually need much punishment because people learn not to do those things. And when there is punishment, it doesn’t need to be severe.
Deterrence theory is an interesting field of study, one source but there are many: https://journals.sagepub.com/doi/full/10.1177/14773708211072...