It's the natural outcome of publishing being cheap and supply of aspiring authors being much higher than the demand for novels. The money which used to be concentrated in the hands of the few who could convince publishers to do business with them is now spread thin among many niche authors.
Further, every modern author is competing with every author who ever lived. I could read the science fiction you wrote last year or I could read Asimov, Herbert, Card, etc. and they're often cheaper and more socially relevant.
Further, every modern author is competing with every author who ever lived. I could read the science fiction you wrote last year or I could read Asimov, Herbert, Card, etc. and they're often cheaper and more socially relevant.