There are also a lot more developers who have ingrained work routines that are just bad. You might be a 10x developer, but there are a lot of 1x developers, 0.3x developers than 10x developers. If they are younger, you can still change their ways a lot better.

If you're the hottest startup around, yes, you can only hire 10x developers.

However, if you're the average tech company, like most are, you cannot. Those 0.3x developers and 1x developers with bad work routines occupy the most job positions in companies.