Wired published an interview of Jeff Bezos realized in January 2005.

Some interesting inputs:

How much of retail sales do you think eventually will be online, and how much offline?
I think online ultimately will be 10 to 15 percent of retail. The vast majority of retailing will stay in the physical world because people have acute needs, they want things now. Also, there are products, like a yard rake, where the economics of delivery don’t make sense. But a 600-pound table saw is a great item to sell online because it always gets delivered. And it’s expensive enough that there is enough profit in it to cover the cost of shipping. Plasma TVs, same idea.

Do physical bookstores have anything to offer that Amazon doesn’t?
One thing is face-to-face meetings with authors. And what Howard Schultz at Starbucks likes to call a third place, where people go and sit and spend time. We humans are a gregarious species; we like to mingle with other humans.

In the magazine world, we rely on ads. Should we be terrified?
I’m not saying that advertising is going away. But the balance is shifting. If today the successful recipe is to put 70 percent of your energy into shouting about your service and 30 percent into making it great, over the next 20 years I think that’s going to invert.