There is a big difference between feeling entitled to something justly and feeling entitled to special treatment.

When you pay for a service, you feel entitled to that service a reasonable level of competence. No beef there. But if you expect and demand perfection or unreasonable service, that's a problem. For ex., if you hire painters you expect a decent paint job. What if you choose the color and then decide you don't like it and then expect a repaint job at their expense? I would say that is a pathological level of entitlement.