[Ratufa]

One of the things driving this is that e-publishing has lowered the entry barrier for people who write "genre fiction". It's easier to get published and put your work out where an audience can find it. By "genre fiction", I mean stuff like military science fiction or vampire romances, etc, that has emotional appeal to a fairly specific audience. In the days before e-publishing, John Norman's Gor books would pretty obvious example of that sort of niche-appeal content.

For this sort of fiction, "well-written" is less important than pushing the right buttons (the plots are usually fairly predictable). To use an analogy, the rise of e-publishing is similar to the rise of blogging, in that they both allow for the easy production and consumption of targeted content (and predictable button-pushing is the raison d'etre of many blogs, particularly those discussing politics).

Note, I'm not claiming all e-publishing is genre-fiction or poorly written, just like all blogs don't fall into the predictable button-pushing category.