Good point, although I'd qualify it by saying "most publishers prepare and publish the most important aspects of a topic first." A site can have more than one topic or major subtopic, and adding a new subtopic can start the "most important" process all over again.
That's probably true overall, but sometimes there are surprises. I've written a few articles on what seemed to be minor topics that have turned out to be some of the most popular pages on my site. As old-timers in the Midwest like to say, "Ya never know."
I agree with that 100%. Too many people focus on their "money" pages without looking at the bigger picture. That's we see so much teeth-gnashing in the Google News forum if rankings change. (When I see a post that begins "I've fallen from #1 in my sector," I think "There's another person who's bet everything on the home page and hasn't heard of the 'long tail of search.'")