I think I know why many talented producers do not make it big in the music business. Below is an excerpt from the book 'A Newcomer's Guide to the Music Business'. I recommend that all upcoming producers read this book:

CHAPTER 7 PRODUCERS:
Hard work, luck and contacts are evidently some of the factors that can help an individual progress in the industry. But what many producers tend to forget is that an awareness of the business and legal aspects of the music business is just as crucial in aiding them to climb the industry staircase. I would even go as far as to say that a basic understanding of these two fundamental components is more or less mandatory for any producer seeking to sustain long-term success. Therefore, a wise producer must not only be creatively adept, but they must also make sure they are legally and economically alert as well.

To start with - from a legal perspective - it is vital a producer is aware that they automatically own the copyright to any instrumental they compose. If an artist then writes lyrics, and lays down vocals on the instrumental, the artist will own the copyright in the lyrics, as well as having performer's rights with regard to their vocal performance on the instrumental. So when a song is finally completed, both the producer and the artist will potentially own separate copyrights in the composition.

In addition to this, a producer possesses 'moral rights' over any music they compose. Moral rights dictate that the producer - as the author of the musical work - has the right to be identified as the author of the work. Coupled with this, they also give the producer a right to object to the work being altered in any way that might have a negative effect on the dignity or reputation of the producer.