> On the face of it, it was obvious

If it was obvious, then the market would have priced it in.

But it didn't. So the crowdsourced collective wisdom was indeed that industries were leaping 5-10 years into the future overnight. That was the thing that was "obvious" to most people.

You may have disagreed at the time, and if you'd shorted stocks you could have made some money. But the idea that "on the face of it, it was obvious" is blatantly untrue. You're able to say this only with the gift of hindsight.