sure, CEOs act as sales agents, but they still rely on investors' money. If they stop believing, then it's all over.

Revenue is one thing but profit is the most important metric here. I remember when the dot com bubble popped. Back then everything you need to have was a landing page to raise 200 million, but now it's the same to get 2 billion (see this example: https://www.perplexity.ai/discover/finance/mira-murati-s-thi...). It's really the same case but due to the inflation we see higher numbers.

Same as it was for dot com bubble. Internet didn't end there but it generated a lot of job losses and economic slowdown.