Growth is all that matters. There is perceived to be much less potential growth in retail than there is in tech. You have to remember, most people literally think of computers in magical terms, and what's possible is usually more anchored by what they see in movies than what they experience in real life. So believing that Sam Altman is going to manage to capture all economic output of labor is seen as a realistic belief. Believing that Amazon will replace all retail in the world is obviously never going to happen.