IT’S hard to comment about about something that appears like “ghost” marketing (marketing an “unavailable” product), though this new approach to seems to be popping up more and more these days. You know the basic story: A product or service fails “due to COVID,” and whether the failing is real or not, public response results in a rush of demand, creating a sales boom, often with the product being offered at higher price. Clever, if, in fact, it’s all true. But whether true or ...