EDC does not have a wikipedia page (and I'm a little unclear on why, altho I have my suspicions -- and yes, I read the copyright infringement explanation).
Usborne Books does have a wikipedia entry:
Here is Nate Hoffelder's mention:
There are some efforts in play to draw a trendline. The first data point is the failure to come to terms between IPG (strictly speaking, a distributor rather than a publisher, but a source of ebooks either way) and Amazon. The second data point is the withdrawal of Usborne (EDC) Books from Amazon. The trend line is, see? Publishers can fight back!
There is a slight problem with this. First, IPG isn't a publisher. But let's ignore that for a moment. Usborne/EDC _is_ a publisher. But Usborne is like Tupperware for books. Tupperware is awesome stuff -- possibly as good or better than any Rubbermaid or anything else you can find for sale at a grocery store or Target or Wal-mart or Costco or whatever. But you can't buy Tupperware in any of those places; you have to buy them from a Direct Sales rep, which is to say, someone who is throwing parties for friends and acquaintance in an effort to generate some funds while having a small amount of fun. [Edited to remove stereotype.]
It's really not at all shocking that a publisher which moves its product through a Direct Sales force would decide that online sales were more of a problem than a benefit.
There are a decent number of third party sellers of Tupperware on Amazon, some of them "Fulfilled by Amazon". One of the comments on Nate's blog suggests that other manufacturer's might switch from listing on Amazon to selling exclusively through their own website. I would argue that we might instead see makers like Tupperware -- who have significant Direct Sales forces -- to require Amazon to delist those products when sold by third parties. But it's hard to be sure exactly how the calculation will play out in any given corporation. More lines to watch would be Amway's Nutrilite products, Avon's Anew, Mary Kay Timewise, Herbalife, etc. -- all of which have third party sellers who are "Fulfilled by Amazon".