Two issues: 1) The market has imperfect information. The expensive developer could be great or terrible, but the same is true for the inexpensive developer. Ev

Two issues: 1) The market has imperfect information. The expensive developer could be great or terrible, but the same is true for the inexpensive developer. Even if there is theoretically some way to tell the difference, most employers don't have the skills to do so. 2) Bad management is at least as likely to kill a project than bad developers, so even a developer who is 10x in theory will on average deliver much less than 10x in practice.