The success of the Kindle has prompted Sony to cozy up with Google to improve its ebook offering. Will it help? I doubt it. The major advantage that Amazon has over its competition is the convenience factor. Modeled on the success of the seamless iPod/iTunes music store ecosystem, the Kindle/Amazon convenience model is just too hard to beat. Apple proved it--you don't have to build the best MP3 player, you just have to come close enough and make it 1000% more convenient than your competitors and you will win the market.