After reading the thread, I'm starting to believe the original premise is completely wrong. Taking the question Do galleries prefer hand made or ...? is really asking will photographers make more money selling digital prints vs. darkroom prints? To this reformulated question, I would say it is becoming an irrelevant question.
The rules have changed to the point where if you hustle, have talent, then galleries (middleman) are to be avoided. I will you use a Youtube photographer as an example. His name is Thomas Heaton and he is a landscape photographer. He runs a multi-enterprise business. Youtube payment (with nearly 500k subscribers to his channel and his number views) he makes real money at it. Then he sells calendars and prints of his photographs. Running quick numbers: if 0.5% of his subscribers buy his calendar and Heaton nets 1/2 of the cost of each calendar (24 pound) then he earns about 22,000 pounds annually. Throw in price of the prints he sells (no idea how many), but he prints them himself so I bet he keeps a high % of his selling price. Then he leads landscape photog classes worldwide, organized workshops. Product endorsements, and on and on. I believe this is how money is made for an independent photographer in the modern world.
In the youtube world there are people who clearly make real money as photographers, albeit in non-traditional ways. See Tony Northrup, Matt Granger, as other examples. One of my favorite artists on youtube is Borut Peterlin. His work is fantastic. If he is the only name you look up from this post, make it his. Also, he the most entertaining personality out there.
Making a living as a photographer through galleries must be near impossible. Marketing outside the galleries really has to be the only way to make a living as an independent fine art photographer these days. Ok, I'm sure some photogs do, but a different world has emerged. Or I might be completely wrong.