How much does it cost to run someone through the legal system for shoplifting? Is that an effective use of resources versus preventing the shoplifting using social services? Three strikes laws have proven very expensive and not very useful for behavioral nudges, so maybe we explore other ways to get folks to shy away from committing property crimes.
If cost were what mattered we wouldn't prosecute all sorts of crimes. It's not about the cost. It's about making it not worth people's while violate other people's property rights.