Companies can only "slim down" so much before they collapse under their own weight/customer loss. A big box store might talk a big game about what will happen, and how they'll go down to a skeleton crew, but when customers stop showing up because only one lane is open during rush they'll change their tune.
There's a golden rule of organizational research that companies keep ignoring. That downsizing is only a bandaid, not a strategy. It's meant gfotr fast turnarounds when a company is about to go under, it's not meant to be a longterm strategy for growth. There's only so much downsizing you can do, and the returns diminish quick.