I've seen some comment on the problems in the article previously, both here and elsewhere. When I looked for a place to pop the link in, this looked like a good thread, and I checked the few most recent posts but figured that the earlier ones were old enough that a refresh with the comments linked would be useful, even if this thread had already made mention.
The suggestion in the article was that the submitters would be required to provide a valid credit card and agree that the card could be "fined" by charging some amount if plagiarism was found. I didn't see that it suggested there should be a fee for publishing. It doesn't sound like a real solution, since shady characters can too easily submit a valid card ID and then cancel the card before anything gets charged; but it might be a starting point for working out something that would be better.
The complaint was about the "erotic books" section(s?) at Amazon, where I suspect the problem may be more prevalent than in other categories. I only rarely do any business with Amazon so I can't say I know much about what's in any of their categories, and lost interest in "erotic books" when I found (when I was about 11 y.o.) that they were invariably too far removed from reality to be interesting, much less erotic. (I demand cliches that are physiologically plausible for humans and most "erotic novels" presume extraterrestrial anatomies that I wouldn't find very seductive.)