Worth noting: Charity Majors' blog on management and tech: https://charity.wtf/

She says several things I've always thought were taboo to even think, including the fact that management shouldn't be viewed as a promotion, it's a completely separate job and some people are better at it than others. My limited experience: it's a separate job, it's a lot more things to juggle and carry, and it mostly makes sense that they get paid more. I have zero experience on director/c-level jobs, so I'm not going to speculate there.