I would like to see more information behind these numbers you posted. Your non-adventure releases number looks like it is lumping together a good number of things that are much less rule dependent than things like the core rulebook, APG, Ultimate Combat, Ultimate Magic which are more a part of the actual ruleset.
I think your numbers are distorted here. At present the rulebooks are:
- Core rules
- Advanced Players Guide
- Ultimate Magic
- Ultimate Combat
Everything else is either:
- An Adventure path, Module or Pathfinder Society module
- Monster Books: Manual or Revisited Line
- Golarion campaign books: Race of Golarion, region focus guides etc.
I did indeed count all of the campaign books as non-adventures, because, well, they aren't adventures. And I also agree that Paizo have a great balance between crunch and fluff in their products. But comparisons need to be fair.
Orcs of Golarion, to pick a random non-adventure off my shelf, actually contains a fair amount of crunch: a page of racial traits on the inside front cover, another page and a quarter of orc traits later on, two pages tactical feats, and another two pages on orc magic, which is also mostly crunch. WotC's
Player's Handbook Races series do have a bit more crunch in them, but not much more.
Paizo are clearly limiting the number of "core" rulebooks, but they certainly aren't only focusing only on "adventure products" as was stated. Rather they are focusing on a better balance between crunch and fluff across all of their products, as well as having an excellent line of system-neutral products like the item cards and Flip-Mats. (Aside: Oh how I love my collection of Flip-Mats!)
In part, I think this approach is driven by the fact that Pathfinder inherits all of the crunch already out there for 3.5. Given that, focusing on products that don't compete directly with
Complete Warrior is a sensible strategy. 4e, by comparison, is starting with a clean slate of crunch, so
Martial Power fills a niche not covered by any existing product.
In reference to what Beginning of the End was pointing to, the first couple are your crunch (and apparently, this covers most of what Paizo plan to release in this vein), while the everything else section are your "consumables". This does not count cards, minis, map packs, pathfinder fiction and other such secondary products. I think in this light, his point stands; that Paizo are focusing on consumable products thus promoting overall longevity with good continuous support. At this point I think it fair to say that it's working.
I agree that it is working. I wish more 4e products had a crunch/fluff balance that was closer to Pathfinder. (And increasingly, that's indeed the case.) But I also think that Paizo's strategy can only delay the need to have some sort of new edition of Pathfinder. Once they have published
Gnomes/Elves/Humans/Orc/etc. of Golarion the options for new products start to decrease. I'm not sure the market for
Yakmen of Golarion is that large. (Although I admit I'd buy it.)