I guess that these are examples of changing tastes. In the 1950s when I began reading s-f, and the 1960s, practically all of the s-f books that weren’t novels were reprint short-story anthologies; at first almost all by Groff Conklin. “The Omnibus of Science Fiction”. The Big Book of Science Fiction”. “Possible Worlds of Science Fiction”. The Healy & McComas “Adventures in Time and Space”. Anthony Boucher’s two-volume “The Treasury of Great Science Fiction”. Murray Leinster’s “Great Stories of Science Fiction”. Judith Merrill’s “Beyond Human Ken”. The first theme anthology that I remember was Donald Wollheim’s 1950 “Flight Into Space”, in which each of the stories was set in the Solar System radiating outward – the Sun, Mercury, Venus, Earth, Luna, Mars, the Asteroids, etc. The only theme that most of these offered was that all of the stories were presumably from among the best in the s-f magazines. By the 1960s and 1970s, I think that some of the best short stories of Arthur C. Clarke, Murray Leinster, Robert Heinlein, Henry Kuttner, Robert Sheckley, and others were in print in two or three anthologies at the same time, not to mention collections of the author’s own short s-f.
Then in the late 1950s, the first original s-f short story anthologies appeared. The “Star S-F” series, edited by Frederik Pohl, followed in the 1960s & ‘70s by series edited by Robert Silverberg, Terry Carr, and others. The main difference between these and the s-f magazines was that these relied more strongly upon their editors’ reputations (you knew that if all the stories were selected by Pohl, Carr, or whoever, they were bound to be good), and that they were only published when their editor had enough good stories to fill a book – no substandard stories just to fill an issue each month. The most famous/notorious original s-f anthologies were Harlan Ellison’s “Dangerous Visions”.
Then around the 1980s, almost all of the reprints and famous-editor-themed anthologies disappeared. You couldn’t find reprints. When I first tried to sell an anthology of furry stories in the mid-1990s with half-famous s-f reprints (most of which ended up in my 2012 “Already Among Us”) and half stories of equal quality from the furry fanzines (most of which ended up in my 2003 “Best in Show” from Sofawolf Press), I got a professional literary agent who agreed that all of the stories were good; but after trying to find a s-f publisher for almost two years, he gave up.
I learned why at the 1996 Worldcon in Baltimore, when I attended a panel on s-f anthologies with several prominent anthology editors. Someone in the audience asked Martin H. Greenberg why all of the famous s-f stories of the past seemed to have disappeared. During the ‘50s through the ‘70s a s-f reader could hardly avoid Clarke’s “The Sentinel” or Bradbury’s “A Sound of Thunder”; now they were gone. Greenberg explained that for about the last twenty years, all of the publishing companies seemed to have become convinced – or had gotten new editors who were convinced – that the public would not buy reprints any more, no matter how famous they or their authors were; or that the public would buy anthologies of new general s-f even when selected by popular authors/editors. The publishers would only accept anthologies of all-new stories. Even he, with his reputation of editing some of the most popular modern s-f anthologies, could not interest any editor in reprints. They all said that they were glad to talk with him, but to forget his ideas for an anthology with any reprints. They wanted an anthology with all-new stories, and about a theme: s-f stories about robots, s-f about holidays or a specific holiday, s-f about postage stamps and mail of the future, about hotels on other planets and space stations (preferably with a harassed human manager catering to non-human guests), about cats – the public loved cats!, about futuristic schools &/or education, about computers, about future libraries/librarians and hospitals and used-car salesmen, and so on.
Is there anything here for the furry specialty presses? We already have the general-themed “ROAR” and the Halloween-themed “Trick or Treat”. I can’t imagine a whole anthology of stories about furry used-car salesmen.