Could the AI/tech bubble continue for much longer than people expect?

I’ve been looking at how some of these companies are valued compared with their actual revenue, and the numbers seem insane. SpaceX is valued at around 80–115× its revenue, Palantir is around 70–80×, and some AI, space, and nuclear companies are even higher. Meanwhile, a normal established company is usually closer to 1–3× revenue. I definitely think this looks like a bubble, but that doesn’t necessarily mean it will burst anytime soon. There is so much money pouring into AI, and everyone is afraid of missing out on the next huge company. The valuations could keep climbing for years, even if they already seem disconnected from reality. What do you guys think? Are we in an AI bubble, and if so, how long could it realistically keep going? What do you think would finally cause it to burst?