In case you blinked and missed it, last week Barnes & Noble filed a document with the court regarding the Department of Justice lawsuits against Apple and several major publishers. Of note:
Barnes & Noble said in its letter that the adoption of agency pricing had lowered Amazon’s share of the e-book market to 60 percent from 90 percent. Barnes & Noble claims to have 27 percent.
The retailer, which operates nearly 700 bookstores, said that before the adoption of agency pricing, it was "losing substantial money in an effort to compete with Amazon’s pricing and was unable to gain significant market share."
As to the first paragraph, this shift in market share started happening around 2010. That year is significant in that it was a few months after the first Nook was introduced and during the time when the iPad came out. Personally, I think it was the introduction of additional devices to the marketplace that brought down Amazon’s market share, not agency pricing.
I don’t know if agency pricing will save the day for publishers, but it looks like they are doubling down on it. With half settling before the case and the other half fighting tooth and nail, this sends out an ambiguous message.