I would have changed after the 2nd time. Unfortunately, it seems that some LA'ers are one trick ponies and a lot of them get into "business" without learning how to run a business with good customer service. LA'ing is definitely a customer service based business.
I learned how to LA for myself, first by renting and then being able to buy a machine, but I try different techniques, threads, and battings. I still am interested in only quilting for myself, but do appreciate people like Charisma and the mother-daughter team who work I saw and they live somewhere in Central Nevada (I believe). One of my quilt teachers used them before she started her LA business.