ColourOfSpring - 10:09 am on Jul 7, 2013 (gmt 0)
All the more reason for Google to say "Enough, already" and let online retailers fight it out on the advertising battlefield instead of in the SEO trenches, as has been done with Product Search.
This problem has gotten worse since Panda/Penguin. So I guess because of Panda/Penguin, Google can say "we give up, commercial results are now paid only" rather than revert back to pre-Panda/Penguin when there was more variety in commercial searches because there were more independents in the top 10s than these "savvy" companies representing themselves several times over via tricks / churn & burn sites + crowd-hosted (whatever you call it) Amazon/eBay blocks of results.
So Google's next move to solve the problem they created is go to a paid-only model for commercial searches.
Well played Google, well played.