my understanding is that hardware stores and garden centres didnt have to close -they did so because they were concerned they couldnt comply with social distancing and minimise risk to staff sufficiently.
lots of businesses are still working -there are plenty of online shopping companies still operating, including ebay sellers.
my sister is a bookkeeper for a building company -they are still working, she only goes to the office on Saturday and collects invoices etc then does rest at home. Their sites are still operating although Im not sure how well they are achieving in social distancing