Given the mortality rates are highest among older people, many of those items will have someone to inherit them. Not all, of course, but a large -ish fraction. The effect you mention, while true, is smaller than with things that kill young people (AIDS, suicide in the West, car accidents, drugs, war).
I believe the greatest effects on banks are going to be, one, credits they won't be able to collect on: individuals will both lose income and have greater expenses; and enterprises won't be making the money they expect, especially those which planned on taking a credit to grow their revenues. Two, inevitably, as in all crises, people are going to move away from fiat money into more stable assets: metals, of course, and these days also crypto. Both will take savings out of banks.