Of course we should buy from a yid, they need parnasah
I don’t think anyone disputes that, all other things being equal, you should buy from a Jewish shop. What we’re discussing in when things are not equal.
What if the non-Jewish shop has what you want at a significantly cheaper price?
What if their merchandise is of better quality?
What if their service is better?
What if it will take you four hours to get to the Jewish-owned store but the non-Jewish-owned store is only ten minutes away?
Those are the types of issues we’re discussing. Personally, I know that I’m too ignorant to answer those questions, but I’m sure there are others here who can do so.
The Wolf