It is the chefs’ and bakers’ business. They are in the business, so it is their business.

Why did Jack Philips choose to disoby the law he said he would obey in writing? When you sign a business application you agree to abide by state law. Jack Philips knowingly broke the law.

Making a cake for a gay wedding does not mean he is complicit with or in favor of gay weddings. Jesus knows how much Jack Philips hates gays, so that is not the problem. 

Jack Philips is not even good at being Christain. He is cherry picking parts of the bible to follow. 
His rights are not being restricted, he could choose another profession or not make wedding cakes. It is very simple.
Why do you hate equal rights?