This proposal is premature and, frankly, best described as histrionic.
This proposal is markedly burdensome on small businesses for a disease that the vast majority of people who contract the disease recover or are never symptomatic.
It also presumes that vaccination is an inevitable failure or that there will always be "a next pandemic".
This proposal will have the obvious (so that no one can ever plead "unintended" consequence of killing new business creation and taking out current small businesses that are just hanging on.
Stop this foolishness now!