Back in the 90s when I was building BI software for grocers, the average margin across the whole industry was 1.1%. Since then there's been an enormous amount

Back in the 90s when I was building BI software for grocers, the average margin across the whole industry was 1.1%. Since then there's been an enormous amount of consolidation in the grocery industry... but I wouldn't be surprised to learn the margin hasn't changed.