More bad news for an already-crushed industry is making investors wonder how much more these companies can take. Stocks fell sharply as investors heard about a new COVID-19 variant. Cruise ship stocks took huge hits as a result. Investors have to hope that travel-hungry passengers will have the opportunity to sail in 2022 and beyond. Black Friday might not have created the same level of stock market discomfort that prompted the naming of Black Tuesday in 1929 or Black Monday in 1987, but stocks were nonetheless under pressure on the day after Thanksgiving. As of 10 a.m. ET on the...