:: Until there is a law saying that private businesses must admit people without masks ::
In the same manner that person is innocent until proven guilty, there must necessarily be a law (regulation) that businesses REQUIRE masks for accommodation.
Not the negative.
Laws that regulate a negative are not laws.
Health department regulations REQUIRE shoe sand shirts be worn in food service businesses.
Nope. As a private business I am free to exclude whomever I want as long as it does not violate a law requiring that those people not be discriminated against. Any business can require masks whether or not it is mandated to do so.