The dotcom bubble was the start of a cambrian explosion.

Those two events are part of the same process, not wholly separate entities in which case one is bad and the other is good. They require eachother and cannot be unlinked. The dotcom bubble was not a bad thing, it was a necessary process of chaotic, sometimes idiotic, experimentation. It was an extraordinary good. The total sum of all capital destroyed during the dotcom bubble (which lasted less than four years) would fit into a corner of Amazon's present market value.

Unless you want to pretend that humans are all-knowing gods. In which case we require no experimentation, there are no foolish mistakes possible, no errors of judgment possible, no irrationalism or over-excitement is possible, no emotion is possible, no idiots and malevolent actors (eg con-artists) are possible. And so on.

We should all be hopeful - giddy in fact - if we're about to see a space-focused dotcom style bubble. Bring on the space bubble, do it right now, let's get moving with that. That will be truly extraordinary, it will signal what comes after: a real, massive, sustainable expansion.

The global Internet is beyond a magnitude more valuable - in every way you can measure it, whether in business transacted, value of tech companies, or how valuable it is to end users - today than it was at the peak of the dotcom bubble in 2000.