Chelle, //The OP is about city centres, cafes, shops, businesses that service city centre workers, not paper cup manufacturers.//
But paper cup manufacturers do service city centre businesses - very much so. You mentioned bakers and cafes and rather flippantly dismissed the probability that without customers they could close. Think about that. Apart from their own staff losing jobs, who else is affected? Who provides those bakers and cafes with the food they sell to you and the equipment they use to provide it? Kitchen equipment manufacturers, distributors and maintenance people aside, there are the blokes who process the sugar and flour for the cakes and bread, there’s the farmer who provides the eggs and milk, there’s the manufacturer and wholesaler who provides the meat and cheese other fillings for the sandwiches, there’s whoever provides the bits and pieces to decorate the cakes and the companies that provide various containers for all of that including the paper bag your sausage roll is wrapped in - and not forgetting the manufacturer and supplier of that irrelevant paper cup your takeaway coffee is sold in....on and on it goes …. finishing with the now unemployed packer who worked in distribution warehouse and the poor old delivery driver who delivers no more….. all of them affected because the shop is closed and no longer requires their services.
The bottom line is in order to generate wealth, society needs business because business generates prosperity for everyone.
Just an afterthought. It would be ironic really if people working from home decide to pop out for a bit of lunch one day - and wonder where Greggs has gone.