https://www.sciencedaily.com/releases/2020/06/200611183930.htm

A new study by MIT researchers uses a variety of data on consumer and business activity to tackle that question, measuring 26 types of businesses by both their usefulness and risk. Vital forms of commerce that are relatively uncrowded fare the best in the study; less significant types of businesses that generate crowds perform worse. The results can help inform the policy decisions of government officials during the ongoing pandemic.

As it happens, banks perform the best in the study, being economically significant and relatively uncrowded.