In the libraries - including the Phoenix Public Library - for some reason, there was an sff section but all of the books were hard cover and several years old. You could check out early and earlier decade stuff but not the latest and greatest.
Any book that was put in paperback was and still is not considered literature because it is in mass market paperback. Therefore the libraries would not stock them. This meant all the "genre" works from specialty markets that would put most of their stock in mass market paperback so fans could afford it, could not get most of their lists into libraries. (The bulk of the prejudice against category sff has little to do with the actual titles and a great deal to do with their being a paperback market that was first mostly sold in places like drugstores, as I keep trying to explain.)
Also, it's just plain hard for libraries to keep track of mass market paperbacks, they fall apart a lot faster, they are easy to steal, etc. So public libraries keep some mm paperbacks around, but they don't worry if they lose them as inventory and they don't bother to keep up with paperback offerings. MM paperbacks in libraries are mostly donations from patrons.
To get around this and to get more book reviews, since reviewers also won't usually cover paperbacks, publishers in the 1990's started doing limited small hardcover print runs not only of the top sellers but of other authors as well, including newbies. This ensured that the books would be more likely stocked in libraries where they might gain a readership. It's the mystery novel model and it worked brilliantly.
But, what intrigues me now is that drug stores still have a book and magazine section as do grocery stores but you never see the latest and greatest sff there; you only find the second tier and re-prints. Why is that?
Non-bookstore vendors such as drugstores and WalMart, who were serviced by jobbers, decided to severely cut down or eliminate altogether their paperback racks in the 1990's. This caused a steep decline in the paperback market that escalated within the decade into a full collapse from which publishers still haven't recovered. Category romance, which made up about 50% of the paperback market but which was beginning to see its fanbase shrink, had to shift huge blocks of authors into the mainstream and cut back all their lines. Westerns, which had been struggling, died completely as a category market. Horror went under yet again, with the number of titles severely cut. SFF was hard hit, but the success of epic fantasy at the time kept it going until the juggernaut of Harry Potter and the LOTR movies. General fiction from Updike to Krantz went through what you could call a recession. And category mystery crashed and burned -- mid-listers were dumped, lists were cut -- it got nasty.
The specialty mystery and sff bookstores, which were already struggling against the chain superstores, couldn't survive with all the publishers cutting out their mid-lists, and decreased to only a handful, although recently there's been signs of renewed life there. The online stores did take up a lot of the slack, but they are still only a small percentage of the total market, as most people still won't shop online. I'm not sure at this point whether the total number of sales outlets for books has increased or decreased to concentrate on the bookstores, but I do know that the loss of drugstores and grocery store business is still really hurting things. Unfortunately, books don't sell as well as cookware and hair products do.
And libraries are steadily losing their funding, often times being closed down.