That said, I believe photographers have an opportunity to market custom printing, and if they are successful at marketing this value-added service to their clients, then eventually bringing that printing in house and under their direct control is a definite consideration, especially when providing output on high quality fine art media rather than budget priced RC photo media.
No argument from me on this. But it's not what young professionals are taught these days, or so I'm told. I also wonder how much demand there is for this kind of service. I suspect not all
that much, so there is only scope of a limited number of people to do it, hence why people are taught to outsource. Also, it's not easy to juggle fine art printing with the demands of making money from shooting and selling. It can be done, but it's not easy, and only a few in my experience are doing it. I wonder how much sleep they're getting.