Can Private Businesses Legally and Morally Force Customers to Wear Masks?

"In practical terms, businesses may fear that if they do not keep up pandemic LARPing frightened members of the public may take their business elsewhere. Any decent business, though, knows how to handle heterogeneous customer preferences. Transition back to normal by initiating masked and maskless hours or locations and allow customers and employees to opt into either based on their preferences." ~ Robert E. Wright