Originally Posted by SaltyDog

Investors look at much more than ROI, only a single metric. Many metrics impact investors. How long are they in market, for what purpose? Dividends?, Are they shorting the investment?.... ROI is one of a hundred elements that affect investors plans. Large institutional investors different than small investors, individual investors etc.
Sears was the original Amazon. They just used catalogs. All companies can go out of business. UPS and FedEx have always sought markets outside of Amazon current residential market. Amazon wont own India or China. Impressive gains, but some reality is overlooked in the dreamy Amazon world.
UPS and FedEx could start a website to compete with Amazon, they don't want too, but at some point, they could. They already own the IT and the air/ground infrastructure and world wide access. Not a far stretch. Other corporations are responding to reclaim market loss from amazon. They are ripe for competition themselves. Amazon isn't omnipotent.