Re: What am I missing @Matt
My comment was a direct answer to the question: "Maybe I'm missing something, but I can't see the difference between what Uber does and what my local private hire firm does with their app." namely, what is the difference between private hire and Uber, rather than the difference between Uber and black cabs, with an example (from one of my clients) as to why you might prefer to deal directly with a local hire firm rather than go via the Uber brokerage service.
"The only advantage I can see in your comment, is some local firms may build up a relationship with customers"
I wouldn't under estimate the power and economic value of person-to-person relationships.