Please note that the majority of workers in usa are on hourly wage.
So for the majority of workers, 80 percent jobs exist, but they are not desirable.
The people on hackernews do not represent the majority, but rather people who enjoy programming and want to make it a high paying career. Such luxury necessarily means it is highly competitive. Therefore I used the extreme analogy of professional athletes.
It's nice that you address an unrepresentative teeny tiny micro sliver of the employed, but is there anything you can add for the majority?