I don't know what Alibaba is but it sounds like a middle eastern concern and to the best of my knowledge homosexuality is highly frowned upon there. Most folks who want a hand made item want something no one else has.
I suppose we all should think about this because it sure could happen. How will you handle the first time you are invited to a gay wedding? My wife works with a gay man who is well above her in the food chain and she loves him. When/if he marries his partner she can certainly attend if she wants to but it will be without me. I do happen to like both of them but I don't believe in gay marriages, My Right.

Absolutely. Because feelings are ephemeral and can be whatever I want them to. Feelings aren't grounded in principles or absolutes. The thing that is the most hypocritical and contrary about the entire thing is that it isn't reciprocal - only one side's feelings matter.

Yeah, and I produced the movie. Your logic is flawed. There is no violation of an individual's right. They voluntarily decided to open a business. By Law (which is not the tyranny of the Majority. It is a necessary component of a civilized society. We call them Laws), they may not always be good laws, and they may in fact be evil, but that is the opportunity, indeed the triumph of Democracy. I am by no means advocating violating an individual' right to association in context of their private business. You open a shop. You do not have the right to choose your customers. Of course, if they cannot pay, they cannot be customers. We trade for fair value. That's covered. Your goods are available for a price. But if someone is capable of paying that price, you do not have the right to refuse them the ability to purchase their goods. It seems the problem here is that you wish to make a distinction between when a product is made, you have the right to refuse to make it for an individual. What I mean here is that if you manufacture widgets, you really do not know in advance who is going to buy them. In this case, you do not have the right to discriminate on who may purchase them. On the other hand, if your business is to create custom, or "on demand" work, you think that therefore you get to say that you have the right to refuse to do the work because you don't like them. No. If you have laid out clear conditions on the circumstances under which you will perform your service, then you're pretty much in the clear. Your conditions may be ridiculous, but your on pretty firm ground philosophically. So if this baker had posted a sign that said "I don't make cakes for fags", at least he'd have a leg to stand on. But they didn't. They're basing their argument that somehow the customer was supposed to know that they were not welcome. The point is that this capricious decision has a very steep slope. No women. No Jews. No LGBTQ. No Whatever. That's why there's a law. It says you can't discriminate. It's prevents stuff like preventing blacks from eating at the lunch counter. They have a right to eat wherever they damn well please, just like any other human. Same with the cake. If I can buy it for my heterosexual wedding, they can buy it for their gay wedding. I'm sure Ayn Rand would agree. She stood very firmly against discrimination as a Jew.