The returns probably manifest at a senior level, where job security is already a non-issue and one has the privileges and power to make this knowledge actionable. This could be why the readers find it redundant and stick to coasting. I'd like to finish reading the Algorithm Design Manual, SICP and others, but it won't get me my next job, because I won't even be in the same room as someone who cares without jumping through other hoops first. It gets shuffled at the bottom of the pile. On top of it is: networking, building bs, contributing to bs, overengineering a bs blog where I'll write bs. I just want to work my 9-5, man (and do it well), but in my case it's a liability not to.