Well, I can appreciate your opinions, but I'm a ghostwriter, and everything I write is top quality. I would love to be able to make a living by publishing my books, but the sad fact is, I have bills to pay and by the time I make enough for my bills writing for other people, there is very little time left to work on my own stuff.
I've been writing online for 15 years - mostly articles and blog posts - for various writing agencies. I'd much rather be earning the money I need for my bills by writing fiction - even if it for other people - because it's fiction that made me fall in love with writing in the first place. So, you can assume that anything ghostwritten is poor quality but you would be wrong. I even included (in my ghostwriting thread on this page) a rough draft of a chapter from a book I'm writing for Harlequin Intrigue, and as you will see, the writing is pretty damn good.
So, while I can appreciate that some ghostwriting is garbage; mine is not. I've been hired by several ghostwriting agencies with high standards. I left because they wanted a 50,000 word novel in two weeks and I still had a few regular clients that sent me good-paying articles. I couldn't keep up. But the books I wrote for those agencies are on Amazon, with great reviews, and with bestseller ranks to show that they are still selling.