> if the number of prejudiced people in business is small (and therefore avoidable), why would the minority group choose to leave the environment entirely?
This happens, a lot. Again, per my previous comment, behavior is normalized, potentially creating a hostile environment.
> After all, we're talking about the prejudiced group simply not wanting to have to associate with the minority group, not necessarily hating them or wishing harm upon them.
We don't necessarily know that. The law certainly doesn't know that.
> We all have people who don't like us, often unjustifiably, but we just avoid interacting with those individuals rather than abstaining from interaction with anyone in their community.
It only takes a small number of people or a few bad interactions for one to choose to avoid an entire area.
> In cases where the number of prejudiced is higher and thus the minority group is unlikely to be able to avoid dealing with a prejudiced business owner, it's unlikely that the two groups would have ever gotten along in the first place.
That's an assumption. Again, plenty of evidence to show that people who don't associate have prejudices that can be extinguished through repeat exposure.
I can see that these all seem small issues in the individual instance, but the thrust of my argument is their cumulative effect has broader implications.
At the risk of seeming too personal (and I mean this sincerely and not in a mean way), it honestly doesn't sound like you've been in an environment where you've felt unwelcome in this way, or spoken to someone who's felt that way about their experiences in certain areas.