You are misunderstanding the definition. A 10x developer does not write code ten times faster than average. They have ten times higher impact on the results of an organization than average. And that's not far-fetched at all. This does not magically happen. There are individuals behind it, often a surprisingly small number doing the critical work that visibly brings the world forward.
It's not about writing a regular boring CRUD app that no one cares about as fast as 10 regular developers. It's about choosing the right problems to solve on their own initiative, building the foundation of a technology organization that can sustainably & quickly grow in scope and users, being the first to solve a problem no one else has understood such that the organization crushes their competition and so on.
Leading the development of web software that scales to 100 million users in 2003. Planning novel computer vision algorithms to a vehicle fleet of millions of vehicles, running on custom hardware they've also made contributions towards. Realizing that consumer VR headsets are now _just barely possible_ if you do everything right, and bringing it to market. Etc.
This is the difference between a small organization being capable of solving a difficult business problem and achieving profitability, and not.
It's not about writing a regular boring CRUD app that no one cares about as fast as 10 regular developers. It's about choosing the right problems to solve on their own initiative, building the foundation of a technology organization that can sustainably & quickly grow in scope and users, being the first to solve a problem no one else has understood such that the organization crushes their competition and so on.
Leading the development of web software that scales to 100 million users in 2003. Planning novel computer vision algorithms to a vehicle fleet of millions of vehicles, running on custom hardware they've also made contributions towards. Realizing that consumer VR headsets are now _just barely possible_ if you do everything right, and bringing it to market. Etc.
This is the difference between a small organization being capable of solving a difficult business problem and achieving profitability, and not.