The long tail is famously good news for two classes of people; a few lucky aggregators, such as Amazon and Netflix, and 6 billion consumers. Of those two, I think consumers earn the greater reward from the wealth hidden in infinite niches.

But the long tail is a decidedly mixed blessing for creators. Individual artists, producers, inventors and makers are overlooked in the equation. The long tail does not raise the sales of creators much, but it does add massive competition and endless downward pressure on prices.
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Assume conservatively that your True Fans will each spend one day’s wages per year in support of what you do. That “one-day-wage” is an average, because of course your truest fans will spend a lot more than that. Let’s peg that per diem each True Fan spends at $100 per year. If you have 1,000 fans that sums up to $100,000 per year, which minus some modest expenses, is a living for most folks.
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I am suggesting there is a home for creatives in between poverty and stardom. Somewhere lower than stratospheric bestsellerdom, but higher than the obscurity of the long tail.