Previously, publishers would do similar due diligence - someone at the house would actually read the book, if not work with authors.
Due diligence of this nature is not now particularly common. There is no cost risk with a digital book. It could be, and often is, written by those without the talent to match their ambition. If one is looking for new authors to read, it's very difficult to sort through the dreck.
Let the libraries sort through the dreck for you. Pro-tip: gift your local library a mere $100. They'll love you for it and invite you to all sorts of interesting gatherings. You might meet a good book, or even better, a good person.
(Then, even further, you might as well just cut out Amazon as the middleman if you're so inclined, or look for a local book store that has online purchases.)
Remember "Snooki"? Four books for sale on Amazon, all published by a "reputable publisher" (in fact, a division of Simon and Schuster).
Of the current top 20 best sellers list:
https://www.amazon.com/best-sellers-books-Amazon/zgbs/books/...
I'd rate at least 15 as "garbage books" on sight.
"Reputable publishers" are in business to make money. Some of them may put on airs of intellectual quality, but in fact if trash books make a buck, they will publish them. If high-quality books are unlikely to make a profit, they will not.
The problem with amazon books is all the garbage books, but if you know you want "the wheel of time" then it's pretty easy to track that down on amazon or elsewhere.
The only problem popularity presents is if it's somewhat underground. Then you might not stumble on it. Otherwise, just perusing the library should give you a lot of books which are reputable.
Wait in the queue? What's fundamentally wrong with that? If something's worth reading, it's worth waiting for. Do we really have to have everything right now?
Nothing of course, patience is a lost virtue and relevant to the topic of the thread, it's no accident that the only thing Amazon has gotten better at is shipping garbage faster.
In fact when it comes to the current popular thing, just go for the unpopular thing that nobody else is interested in because chances are there's something more interesting in it anyway. There's also this community on reddit of people who on principle wait a few years before they play games. Time is literally the best filter. Anything that's popular and good will still be interesting in three years.
And CA libraries have access to courses on Coursera.
Bill and Dave (Michael Malone). The history of Hewlett-Packard.
Legends & Lattes: A Novel of High Fantasy and Low Stakes (Travis Baldree)
Hitch-22 (Christopher Hitchens). his memoir
Hopefully just a temporary glitch, but there's a hard problem of being a gatekeeper and saying "No, that's not a real book".