It also exists in a much more banal state lower down the ladder. I have friends who landed in the low end of the developer market. They literally cannot do most of the work I do. They don't understand DB isolation levels, they don't have the skills to design systems around eventual consistency, they are not familiar with basic distributed system problems like clock drift, etc. I'm not even an infrastructure engineer, this is just stuff I and my coworkers need to get through our days to ship product code.
Could my friends do this stuff? If they applied themselves, sure! But they're not going to. It's also not enough to learn on the job. We occasionally hire someone who doesn't actually have the skillset and they usually flounder.
