What would life be like if all the physical industries were closed and only e-commerce was left?

At the top, the real estate industry collapsed and the banking industry collapsed, thus affecting the development of the national economy. At the bottom, people who are old and can't buy online can't live. Those who can buy necessities and daily necessities online cannot all wait for online shopping. I want to drink some water when I go out, but I can't sell it. No physical store, no way! Imagine that if there were no physical stores, most of the people who appeared on the street were couriers, and what everyone wanted to buy was invisible and intangible. There was no communication between people and no blending with goods. This is really a blind purchase! Isn't that terrible?