The previous comment would seem to be implying that there's "a real fundamental value buried in the noise" for investment instruments, but none for models. I would say that there's always real fundamental value in people, models included, and that this value is in some sense more real than anything in any market.
The momentum is the only source of value.
The momentum is the only source of value modulo the market. There is indeed "a real fundamental value" to all personnel assets, but it isn't even "buried in the noise." The problem is that the market is almost totally disconnected from this underlying reality. (The question seems too complex, to ever be fully connected.)
There is a sort of fear and insecurity that overtakes tastemakers faced with overabundant choices with no good analytical tools to help them. I'm not sure what the solution is. An "indy" market is no solution -- these seem to merely become the "bush leagues" for their preexisting mainstream. After awhile in cultural markets, the noise machine takes over the market and disconnects it from the human and cultural perceptual machinery which gave rise to it. (Which I will call "true taste.") Subcultural 'scenes' arise with a renewed connection to true taste, but these scenes eventually get swept up into the same disconnected market.
I suspect that Buddhism talks about this. I suspect that this is just a part of the human condition. Things like Rotten Tomatoes can help, in that rogue tastemakers who are simply succumbing to bribes and other simple manipulations can be left out in the cold. Maybe the 4chan folks have got it right, and informational/social anarchy is the ultimate solution.
In the meantime, a dispassionate analysis of such markets might yield opportunities to make money through trading.