They always have and always will. The need for businesses to generate returns for their shareholders has not been repealed. Second, do not confuse what a company does with where and how it does it. Amazon is a retailer. Third, although the Internet may seem infinite, the economy is not.
Markets are finite and the world is a competitive place.
The success of one business or market will come largely at the expense of another. Invest in firms with a sustainable competitive advantage. Fourth, management skill, discipline and perspiration matter as much as inspiration. The world is full of one quarter wonders. It takes more than a pretty website to make a business work.