For most small businesses running a website that shares stock with a physical shop is actually quite a lot of hassle, but if the physical shop is closed much easier. I don't know the owners, maybe they just need a hand setting something up?
For some people, the Great Leap Forward is not always something they need to do. If they have enough going on via their current marketing, it can be wise to avoid the extra expenditure and work involved in having another 'platform' to monitor.
Many years ago, I used to have a side-line making glass display cases. I had various half-arsed methods which brought orders in at a rate that I could cope with. I was persuaded to put an advert in the Newsletter. I was then inundated with enquiries for a period of weeks, some of them from a local competitor and his associates, but mostly from people who were only vaguely interested. Not a single person who had responded to the advert actually bought one. I returned to the reliable steady trickle that the old system produced.
About a third of people bought another one.
About a third of people bought one because they had seen one in a purchaser's house.
About a third* bought one via a model shop in Mill Street, where I had one in the window and we had a 'royalty' arrangement...
* This third, generated a lot of the other two thirds.