A special gravel the gravel man does not offer.
If it's a special gravel and the company dosen't do special orders for other customers, then Public Accommodation laws don't require an services not normally provided.
However the bakers did normally provide Wedding Cakes as part of their business model and refused not because it was not a product they produced but based on who the customers were.
Here's the question all avoid: Should he be forced to sell something he doesn't want to, ie, do protective rights apply to products.
There is a difference between what our opinion is of what the law "should be" as opposed to what the law "is".
Personally I support the repeal of Public Accommodation laws in respect of rights of association and property as applied to private business entities.
But that is a different discussion about what the law should be and not how the law functions in reality.
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