Now if you are only very good, ( which in itself is great, you could be the top 5% in the industry, or even top 1% ) you will need some connection and luck. The problem is there are only finite amount of popular song writer writing for best music. And that space is likely to be limited to a double digit personnel.
It is like Formula 1, there are only a handful of drivers in Formula 1, but they represent the best of the best in the world. You don't want a centimetre off Apex, you want them to be in millimetres. These best of the best may only be 4 - 10 faster even on the same cars, but you could spend the rest of your life time never be as fast and as consistent as they are.