that's demonstrably false.
the wedding cake shop that denied service to a gay couple up in oregon is still in business, as is the flower shop that denied service to a gay couple in washington, as is the wedding photographer who denied service to a gay couple getting married in colorado.
businesses that denied service to blacks did just fine for themselves, even as black people protested with sit ins. thy were spat on by white customers and sometimes violence ensued against them.
might want to check up on history before making such silly claims.