Do you have any data to back this up? That feels very wrong anecdotally, but I'd be glad to be proven wrong.
Overall my point is just that the retail theft story is blown way out of proportion, and many media and political outfits benefit from concern around crime.
I think the more interesting questions are if the rates of theft are changing. IF it has gone 10x in 10 years, that might be noteworthy, no? If theft rates are concentrated in 10% of locations, that might be noteworthy too.
My national retail supermarket has profit margin of about 1% of sales (ticker ACI). If mismanagement was always 1%, and now theft goes up to 1%, the company will go bankrupt.