A couple of things keep them in business for both their Moslem and no-Moslem customers ~ (1) LOWER PRICES, (2) MORE USEFUL SMALL CUTS and, of course (3) A load of restaurant customers to keep up the volume and keep the product on hand fresher.
My problem with them is they do not sell pork, and I can't stand the odor of non-vacuum sealed raw sheep meat. So if I buy something there like a fresh plucked chicken, or beef ribs it's a quick in and out.
They also sell goat meat ~ and someday we might try that with a Jamaican jerk recipe we have on hand. It stinks too but the odor goes away after cooking it a couple of hours outdoors.
Well enjoy your halal butchers.
I have no problem with any small business owner finding his niche.
My problem is with huge companies such a Campbells or Nabisco or whoever deliberately altering their recipes to be politically correct.
I for one, do not wish to encourage this usurpation of our American Culture.