I'm always surprised to learn a great majority of people I come across only devote scattered time to reading short form articles or magazines. I'm even more surprised (stupefied) to learn that individuals who are capable, do not read period.
Even professionals; from nice suit and tie wearing lawyers, to some physicians, to a couple of sales execs, and from my side of it, people who do art as a "hobby", only commit to reading short form (web, magazine articles, etc). You know, things that are easily skimmed, that do not require any of that analytical processing shit.
I say, art as "hobby", because I've yet to find a “full time” artist who doesn't commit to reading as a habit. Mostly fiction I might add. Same goes for the entrepreneurs I've come across. They however, are strictly tied to non-fiction. That’s just how they role.
People who I know, and whom amaze me most often, are also the ones who are avid readers. And, they’re diverse readers. They swallow up books, and they take notes, and they apply concepts into their own existence (if the particular type of book demands it).
Look around yourself. Find any correlation? If not, go outside your circle a little. Maybe being the average of your 5 closest friends is blinding you from others?