There is another engine driving this phenomenon: addicts "boosting" to feed their addiction. Drug use is another crime that society seems uninterested in prosecuting or punishing as of late. Add illicitly manufactured Fentanyl (1) to that recipe and you have an absolute onslaught of retail theft.
In interview after interview with addicts, it's clear that boosting is one of the primary methods of funding drug use. (2) If we are not interested in curbing drug trafficking, sales, and abuse, we will continue to have a huge problem with retail theft. (And also an unconscionable death toll that is growing rapidly.)
(1) https://pubmed.ncbi.nlm.nih.gov/34603876/ (2) https://www.youtube.com/@SoftWhiteUnderbelly/videos