Exactly. The goal of most business owners is to increase, not limit their clientele. So often it is the customer who inadvertently sets the rules. For example if the majority of the customers prefers other customers wear a mask, the business is likely to comply with that.
It has been commonplace in some countries for people to wear masks in public even before COVID. They do this not only to protect themselves from viruses but the proper mask can also help reduce other pollutants from entering the body.
At last count I've been to 33 countries in my business travels. The only places I saw people wearing masks pre-Covid were in Korea ( i have traveled the length and width of that country several times) and in Beijing. Not in Shanghai, Chengdu, Leshan, Tangshan, etc. Just Beijing. They did it because of particulates in the air caused by the dust storms in China and emissions from trucks. The air quality on most days in Beijing and Shanghai is atrocious from auto emissions.
So "some countries" is what? 2?
They never did it to prevent viruses. I asked the sales agents I traveled with about it and that's the answer they gave. They live there- they should know.
I NEVER saw people wearing masks in Malaysia, Singapore, South Africa, Zambia, Namibia, France, Belgium, the Netherlands, Germany, Denmark, Sweden, Finland, the UK, Austria, Liechtenstein, Poland, the Czech republic, Hungary, Taiwan, Japan, Estonia, etc etc etc.
So there is your real life experience.
Meanwhile the same people in China smoke like fucking chimneys, lol. So much for disease prevention.