For an online discussion in one of my classes, we looked at an interesting screencast by Eli Neiburger, whose thesis generally boils down to: libraries are screwed. Granted, it's not all gloom and doom, and his purpose (in my opinion) is to make people face the stark reality of the current state of libraries in order to facilitate action. Still, there are indeed huge problems as we look to the e-book situation.
Even if libraries wanted to be filled entirely with e-books (one famous library is), publishers will not allow many new and bestselling books to be so openly shared by a library. Despite the fact that libraries possess software that erases the e-book after a certain period, akin to a normal library book, publishers know very well that there is no limiting mechanism. That is, when a library has 5 copies of a bestseller, only 5 people can have that out at one time. Spread across the country, this is manageable monetarily for a publisher. E-books don't have this limiter. You could have millions of people check out the e-book, finish it, and have no need to buy it from Amazon or what have you. Publishers are hip to this, and have consequently held back from giving libraries the right to rent out e-books to patrons... and since these are de faco the most popular items in the library, libraries are forced into appearing antiquarian (Where are the e-books? Libraries are stuck in the past, man). This situation could and very likely will change, but it's just another area where the public can point to libraries not meeting patrons' needs, and not keeping up with the times. One more reason not to give them so much tax money. Basically, we're screwed.
That said, who or what isn't "screwed" these days? Companies are still lean and mean, more profitable than they ever have been, as productivity expands due to the revelation that productivity goes up as more people exit the workforce. Is anyone happy with that little truth, that 10% of us will probably just have to remain unemployed for the foreseeable future? Is the publishing business really stable and solid? (Maybe this will give you some ideas) Are we in the midst of another tech boom or something? How's China doing lately? Honestly, if the sky is falling for libraries, the same case could be made for each and every industry that resides in the good ol' US of A. I even saw a laughable news story (more story than news) that honestly tried to make the case that the USA is destined to fall like Greece and Rome. First of all, the Greeks and the Roman Empire never really "fell" in concrete or easily explained ways. Rather, their empires eroded systematically over hundreds of years, culminating in either dramatic events (as in the case of Imperial Rome, who nevertheless survived another thousand years in the East) or rather unremarkable circumstances (Greece eventually becoming a solid league after Rome becomes a hegemony). Secondly, we can't even get the reasons these empires "fell" straight: what makes us think we could foresee our own demise and when it would take place?
Anyway, I'd be a lot more worried about libraries if these were prosperous times and all the industries linked to libraries were doing excellently. The fact is, for the past 2 years and for the foreseeable future... we're all screwed.