alt Hacker NewsThe answer lies in one of your questions:
> Grocery stores closed to visitors, all shopping done online and delivered to your door
In the UK at least, and I'm sure in a lot of other places, a solid proportion of groceries are now delivered to the door. But, that doesn't mean that supermarkets have closed; if anything, they seem to be busier than ever.
Instead, we have a hybrid market where convenience for the consumer is the ruling factor. The same is going to be true for most of the other situations you mention.
In parts of the US, even low-crime areas, a significant amount of the items at grocery stores are locked up in glass cases. If you want them you have to track down an employee and beg for access (and in some stores they won't let you carry the items to the register). That part of the store might as well be closed to visitors, replaced by vending machines.