As to the failure of ebooks as a viable publishing alternative? Hmmm...methinks he hasn't heard of Ellora's Cave! Or, for that matter, several of the ebook publishers that cater to the romance genres. The examples in his article came mostly from the non-fiction side of the aisle, although he did reference other literary forms. He also seemed to think that most ebooks eventually were printed out by the purchaser for easier reading.
He could be right on the last comment. I don't know how many readers actually print the books they buy online. I know I don't. I don't have a neat little reader-ma-bob either. I read them right at my computer screen. For some, I know that's a problem, but my eyes are in that in-between stage right now. LOL I use bifocals for distance and closeup work...but the computer screen is exactly the right distance away that I don't need assistance! That's why, if you ever see me, you'll find my glasses perched on top of my head in easy reach if I need to see something across the room or read a piece of paper. But if I want to talk to you, I have to take them off. Otherwise I'm doing the head-nod thing trying to determine which part of my glasses work best to see you!
So to answer each tempest in a teapot with a dash of my own spice: there are good and bad writers of every genre. Read the authors you like; ignore the ones you don't. And don't bury the ebook publishers just yet...they're still alive and kicking in my experience!