At songwriting forums, I have heard people in the music industry express the belief that songwriters should have to earn the right for their songs to be heard by writing a quantity of songs, over a period of time. This is an example of one of the problems with the music industry, why there is so much discontent by the public over what is available. A song is good or not good irregardless of how many other songs the writer wrote. If someone loves music, I would expect them to want a great song to be heard, even if it is the only song the writer ever wrote. Some of my favorite songs, which were great hits, were "one-hit wonders." I never heard anybody say that "To Kill a Mockingbird" should not be published because Harper Lee has chosen not to write anymore books, or at least not to publish any. The idea is ridiculous.
Of course, the problem is that the music business today is not being run by people who have a burning desire to bring great music to the public, but by business people whose burning desire is to make money. Of course, they have to make money to stay in business, but they are apparently lacking the ability to make the emotional connection to music that is necessary to choose great music.