[jjsjdhh88]

"...most individual contributors overestimate how much value they actually provide..."

Am reading "Deep Work" right now. In it he touches on this while explaining how hard it is to measure, and how no reliable attempts have turned up by those who try. This applies to C*O level on down, no one is sure how to measure this.

So when you write:

"The same just isn't true of product development, sales and marketing."

I call BS. There is no measure out there that can accurately gauge the specific contributions of an individual or a team within an org, in knowledge-centric work these days.

There are outliers. A team will luck into a bigger than expected sales deal. Or engineering stumble into a way to provide the same performance with less servers.