SepiaandDust, I just see it differently. The traditional publishing method doesn't make one book better than any other. So the traditional publishing method isn't superior. If it is the one you prefer that is absolutely fine. If another author considers the alternatives that is absolutely fine, too.
As pointed out, editing does make a huge difference. And not just cleaning up the typos and grammar slips. The flow needs to engage the reader and carry them through the book. That isn't accomplished through magic and it isn't accomplished simply because a publishing company bought the rights to your book.
As for the author's reach, technology and the multitude of social networks allows word-of-mouth to spread faster and easier than it ever has before. Books need availability and we can cover that with ease. Books also need exposure. There are low cost tools and methods which anyone can use to begin generating attention.
Goodbook, yes, nothing is more annoying when you are trying to read a book and can't get past the painfully obvious typos. Makes you wonder if the author/publisher even proofed the final product.
LaSorcia, self-publishing has a very strong group of supporters. There are hundreds of tools at the author's disposal to help them through the process to churn out a really nice, polished product. If the author puts the effort into it, that is, otherwise it is 'garbage in, garbage out'.
For printing, we will use POD distribution unless the author specifies a preference. This method lets the distributor digitally print the book as needed. The value in this method is no large initial book order along with warehousing fees. It also prevents the losses which can occur if any of the books get damaged while in storage. This keeps printing costs low without losing quality.
The books the author will buy for themselves will be digitally printed. Offset printing becomes affordable when a large number of books are needed, typically around the 1200+ mark.