I read a lot, and I'll read almost anything. So far, in my life, there have only been 2 things that I have started reading and put down never to pick up again. The first was "Emma" by Jane Austen - only three pages of that was enough to put me right to sleep. Could it be more boring? Only if it was filled with blank pages. The second was some Star Wars extended universe novel. It was written back before Ep1, I can't recall the title or subseries or whatever. I just recall that it was the most poorly written piece of trash I have ever laid my eyes on. After only a couple paragraphs, I felt like a 7th grade English teacher who has just read The Worst Term Paper Ever. Really, it was BAAAAAAAAD, awful, and whatever other synonyms there are. I imagine there are some Star Wars fans who are hungry enough for more story that they can look beyond this corporate drugstore novel bullshit, but I can't. It's like somebody whipped up a Windows 3.1 batch program that writes its own novel, once it reads a list of characters from a textfile. Even Stephen King, the lord of mass-market trash paperbacks, is probably embarrassed to be on the shelves in the same section of the bookstore as that shit.
That being said, I can see how LucasCorp might have a hard time coming up with decent material for another trilogy or two.