Actually, I think used bookstores will be the last to go, and may take years.
They'll need a savvy business model, though. Not a creaky old overpriced store with smelly, damaged goods.
Of all the music/record stores left, Amoeba is doing really well in L.A. and S.F. Thriving, actually. They have a new section (required by California law for all who sell used merchandise, by the way), but the mostly sell used stuff, and the selection is huge. Sometimes they have good deals (really good), and sometimes they're overpriced. So you have to be a smart shopper. But they also have live bands, and the people who work there really know their stuff.
I would say a used bookstore could achieve the same level of success, if they modeled themselves after Amoeba. They could/should have high-profile readings & signings, book clubs, etc. And yes, they will be competing with libraries. But bookstores have always been for people who want to own books, not just read them.
"Jaws is the Citizen Kane of movies."
blocked: logan2, Diamonds3, Hamilton22