Retailers do use queue theory (here's an old article about it[1]), it just has to come from the management down rather than individual store managers. 1: https

Retailers do use queue theory (here's an old article about it[1]), it just has to come from the management down rather than individual store managers. 1: https://www.nytimes.com/2007/06/23/business/23checkout.html https://www.nytimes.com/2007/06/23/business/23checkout.html