Reading your post, Mark, makes me conclude that whilst you are defending (?) the art world and its 'heroes' you are, at the same time, entirely sceptical about the worth of any of it, and simply pleading for the 'artists' rights to do what they do. I would agree with the point about their right to do as they do, but not about values, relative or absolute.
Have an encyclopaedic knowledge of every name, and product of said name, whilst it denotes familiarity with the material and its maker, it doesn't equate with that product having or not having a real value distinct from its monetary valuation based on nothing more than commercial exploitation or opportunity, not mutually exclusive, one to the other.
The problem is so basic: while there is no definitive way of apportioning a true value upon anything such as art, there remains no valid way of verifying that value beyond the one conferred by investors or innocent buyers.
For example, if a person cannot afford a large, framed print by whoever, but does buy a much smaller one at a quarter of the price of the large one, does that mean that the same artwork has no intrinsic value of its own, and that only the paper and frame have a true value that can be measured with reference to the purchase price of the raw materials? Something coming out of a factory can be analysed and broken down into production costs, and priced for sale with a percentage applied to make the exercise sustainable and profitable. You can't do that with a 500th of a second.
The world of art is a mess, a conspiracy and game for those with too much time and money to play with - if there's such a thing as too much, which leads to another debate.
"Live and let live. It's not as though photographic artists and galleries and collectors and museums are not trying to elevate the art of photography to similar levels of acceptance.
Perhaps one day fine art photography will come into its own in similar fashion. It is what many working today aspire to. Everybody's got a dream."
Of course those galleries want to turn everything into money, and the more confusion and opaqueness they can spread the better; exactly as with electricity and mobile 'phone contracts...