Seems a little weird for the folks praising this - it would be the equivalent if the music industry actually started charging what they want for music. Apple holds down the prices there, so why is it such a bad thing for Amazon to hold down the prices on books?
I don't think that is is praising the publishers but a bit of a backlash on Amazon's pricing of the products and some people realize the economics of making the books. Amazon has dictated both the price and the publishers cut on an eBook. While this may have been OK when it started out because it was a new market that was not competing on a large level with their core business, it is not a good deal for the publishers going foreword if the eBooks take off and cut into physical book sales. Again from the article:
The increased prices will reportedly actually result in lower income for book publishers, serving instead to prevent Amazon from selling eBooks at a loss in order to draw in Kindle customers.
So Amazon in deciding on their pricing for eBooks has basically made the entire industry a loss leader to attract Kindle customers. This is not a good economic model for an industry. Sure it is common practice for a retailer to attract customers with products that are "on sale" at a loss, but those are typically temporary sale prices not regular prices and it is not an entire product line that is sold at a loss.
Even with the new pricing it is not a bad deal if you look at it. The list price of a new release hard cover books is $24-30. The publisher wants the eBook version to go for $12.99-14.99, which is still about 50% savings over the list price of the hard cover.
As for the publisher dictating the price, they always have in the past and it was not until big retailers came in that you started seeing major discounts. Magazine publishers pretty much get their newsstand price, Apple mandates their retail price, as does Nintendo for their products. This isn't as uncommon as it sounds.
Of course the market will decide, and if the publishers cannot sell their books at $12.99-14.99 and cannot make a profit at $9.99 then I'm sure they will stop selling eBook versions entirely or at least delay the release so that they can maximize their profits (and pay off their initial investment) off the hard cover before releasing the eBook...which is exactly what they do with the soft cover book and the movie industry does with DVD sales.