Not really; anyone could sell an ebook to amazon under the wholesale rules as well. It probably makes things easier for self-publishers in that amazon can't sell big-name titles for as cheap, which might increase demand for small name titles at lower prices, but is that a good thing?
I'd say it could a good thing because it facilitates price competition between actual producers, where the feedback from the market can more directly affect the quality of actual books rather than just who gets to sell them.
