Spiral bound, so libraries do not own it

In this Oprah Alert at EarlyWord there is this line:

Unfortunately, the book is spiral bound, so libraries do not own it. Libraries do own her previous title, however, Give It Up!: My Year of Learning to Live Better with Less

Here is the WorldCat record for the book. Around 50 libraries have the book.

How big of a factor is it that the book is spiral bound?
If the book was not spiral bound how many more libraries would have owned the book at this point?

Now that the book is going to be highly requested how will the spiral bound issue play into whether your library would purchase the book?