Go read the whole series at The Long Tail:

1. The decade the blockbuster died
2. The decade the blockbuster died (Part II)
3. Death of the blockbuster (part III)
4. Death of the Blockbuster, Part IV

Problem: How does a bookseller manage in such an environment? Not an Amazon, not a Borders, but a bookseller? You can list as many items as you want on ABEbooks.com or Amazon.com; how will the people who want them find them?