Is there any good way to show the value of technical writing in a dollar amount?

I wish there was a way to show employers how valuable good tech documentation is on a document by document basis. Like every time someone reads a bit of tech writing and it answers their question, that interaction could be captured and somehow reflected in a dollar amount. This way it would be easier to demonstrate what is already obvious to most people in the community - that good documentation is not an afterthought but a value driver.

Is there a tool that can do this - like a combination of a git blame that assigns credit to a writer + some kind of rating or helpfulness score that can be translated into a value metric for the writing?

There seems to be a causal gap between question and answer on the vast majority of technical writing besides like stack overflow.