And yet, private businesses are subject to certain restrictions. For example, it is illegal to refuse service based on one's race or sex. I am not sure if companies are allowed to discriminate based on one's political views.
Based on this comment, it appears you have a poor understanding of what qualifies as a protected class and what they are protected from. You might want to brush up on that.
So first of all, SCOTUS "avoided ruling broadly on the intersection of anti-discrimination laws and rights to free exercise"[2]. Second of all, you chose to bring this example up and comment on my understanding without having done your due diligence and understanding the issue properly. Oh the irony!
[1] https://en.wikipedia.org/wiki/Masterpiece_Cakeshop_v._Colora...
[2] https://en.wikipedia.org/wiki/Masterpiece_Cakeshop_v._Colora...