How will shrinking shelf space impact libraries?

Interesting question on shrinking shelf space at book stores… how will that impact us? How will shrinking shelf space impact publishing?

However, the shelf space is shrinking.
It is hard to see these lost shelves being replaced by others and therefore the volume of print itself may have to shrink further. Some believe that a direct marketing approach will replace the High Street and to a degree it is true, but unfortunately the biggest direct marketer today is Amazon. The one that knows more about your book buying habits, tastes, dislikes and your disposable income is only one click away. Many direct marketers merely only handle the marketing and throw the fulfilment over to – yes, Amazon.