Redbar, following up my question about whether these thin pages were ecom or not ecom...
Non ecom, generally my niche related "business" sites, not huge International branded sites, not even huge niche sites, poorly written where there is text, basic coding is usually ok but very rarely responsive,
I had asked primarily to learn whether there might be a difference in Needs Met between your pages, which I gather are thorough and descriptive, and these pages which you characterize as thin. I'm making no judgements, and this is all conjecture... just trying to get a sense about whether, if the thin pages were ecommerce pages and your pages were not, Google might consider your pages research pages, with the lean pages more efficient as ecommerce. I gather that this isn't the case... that none of you are ecommerce.
I myself tend think that depth of detail helps on ecommerce, though I've seen it overdone... when a page becomes a treatise on every aspect of the product that no-one is going to read, to the point where it's hard to find the information that strictly relates to what most users need to know.
I have done a fair amount of B2B where every sale was really a client-company consultation and a customized product package, and there was no way to prelist that info. So, our pages were information pages... but I was able to increase customer response with very well organized, well-illustrated content... and, most important, I felt, very clear and prominent buttons to request various degrees of information on a product. The idea IMO is to start a dialogue with a prospect as quickly as possible, albeit avoiding pop-ups and all those things that drive users crazy.
With regard to thin pages ranking... after every update, I've observed, Google always has to initially show pages that are lacking... ie, the pendulum needs to swing too far until Google can nibble back and the feedback stabilizes. If this doesn't happen, Google would never be sure that they've gone far enough in their initial corrections. This is always frustrating, as it takes time.
I think your comments about having reached the max that the market will bear are most likely right on.