Racists would deny Black people products or services and they would be boycotted out of business.
Gays would demand wedding cakes from Christian bakers and their cries would be drowned out by the crickets.
The federal Public Accommodations Act does not protect homosexuals, and only a minority of states have Public Accommodations Laws that protect homosexuals. That is why there have only been a handful of cases involving bakers or florists and gay weddings.