On #1 (Jeff Bezos went to Seattle, not San Francisco), in the book "Wander and Invent" the following is explained:
"I made a list of products I might sell online. I started ranking them, and I picked books because books are super unusual in one respect: there are more items in the book category than in any other category. There are three million different books in print around the world at any given time. The biggest bookstores had only 150,000 titles. So the founding idea of Amazon was to build a universal selection of books in print. That’s what I did: I hired a small team, and we built the software. I moved to Seattle because the largest book warehouse in the world at that time was nearby in a town called Roseberg, Oregon, and also because of the recruiting pool available from Microsoft."
On #1 (Jeff Bezos went to Seattle, not San Francisco), in the book "Wander and Invent" the following is explained:
"I made a list of products I might sell online. I started ranking them, and I picked books because books are super unusual in one respect: there are more items in the book category than in any other category. There are three million different books in print around the world at any given time. The biggest bookstores had only 150,000 titles. So the founding idea of Amazon was to build a universal selection of books in print. That’s what I did: I hired a small team, and we built the software. I moved to Seattle because the largest book warehouse in the world at that time was nearby in a town called Roseberg, Oregon, and also because of the recruiting pool available from Microsoft."
On #7 (Bezos as a skilled and masterful business writer), I have also enjoyed this:
23 Lessons From Jeff Bezos’ Annual Letters To Shareholders
https://www.cbinsights.com/research/bezos-amazon-shareholder-letters/