This is mostly a function of policies that explicitly allow and tolerate this sort of behavior as a sort of “pay back” and “release valve” for the poor, addicts or generally speaking under represented social classes.
As the wage gap and opportunity gap widens in the US, allowing shoplifting is actually an intentional release valve that is being tolerated and even outright legally permitted (California Prop 47), because - without it - we would see more home break-ins, kidnappings of wealthy people and more severe offenses. Instead, shoplifting is relatively harmless and prevents this type of escalation of crime.
“Panem et circenses” said the Romans, shoplifting is a form of “panem”. I think many don’t understand the incredible pressure pot that is the US at the moment with vast negative social pressures and inequality. If it explodes, all bets are off: the US could look a lot like South Africa and Brazil than what it is now.
This plus some political survivorship too: votes are all equal, and when most people are disadvantaged or about to become disadvantaged, politicians cater more and more to them (populism) in order to survive and dominate in the political arena.