If I live on the border of a low or no sales tax state, is it immoral for me to drive across the border to make my purchases? Why or why not?
If I can order something on line from a low or no tax state, then why shouldn't I?
Barnes and Noble and Borders problem was that they encourage the cheap and lazy class to come in, hang around a few hours, read the books, drink a cup of coffee and never buy anything.
I won't blame, or penalize Amazon for having a far better business plan.
Thats a different example. There is nothing immoral about living somewhere and buying somewhere else. Look at the people in SC who work in Charlotte. What is wrong is charging one retailer a tax without charging another retailer the same tax. Then you have the government acting as an agent against a retailer.
As for the business plan, Amazon is great, minimizing overhead and inventory. Nothing wrong with that.