There is just no limit to Leftie ignorance about business, is there?
Supermarkets are high turnover, low margin businesses and it is Profit/cashflow that counts more than revenues (simplifed for the Lefties reading this).
'In the financial year ending March second in 2024, Sainsbury's recorded a profit of 277 million British pounds before tax and 137 million British pounds after tax. Although a decrease on the previous year, this still marked a significant improvement from 2020/21, when the company experienced a loss.'
GBP 140mn in extra NI is is MORE than their after tax profit.