[dialup_sounds]

That's commonly repeated but it's misleading for at least two reasons.

Firstly, employee-related shrinkage includes inventory control and accounting errors ("paper shrink") in addition to employee theft. These are often added together to differentiate them from external theft, but they're not the same and the mitigations for each are as different from each other as they are from external theft.

Second, and relevant to the GPs point, there is variation in the amount and proportions of shrink from one site to another across a chain. The stores that get closed are the outliers, not the average stores. e.g. Your chain wide average shrink is 2%, but all of your stores in this one market are 10% for several years running. Realistically, the difference is almost entirely from external theft.

[Two4]

Or internal theft syndicates - but those are even harder to fight than external theft.