dot-com bubble companies were not good companies. They either built something that was not novel so it could be copied, or had insufficient value to monetize. We'll see the same with current AI.
Similar to the invention of the web, AI is not a bubble. Real value has been created.
Cisco was the quintessential dot-com bubble company. Back then, it was what Nvidia is today: at the very spearhead of investors rallying behind the Internet.
"Good company" is subjective, but to argue that the company that built the backbone of modern web didn't make anything novel or monetizable is a bit short-sighted, don't you find?