Technology

I agree and in fact I feel the same with AI.

Fundamental cryptocurrency is fascinating. It is mathematically sound, just like cryptography in general (computational complexity, one way functions, etc) and it had the theoretical potential to change existing political and economical structures. Unfortunately (arguably) the very foundation it is based on, namely mining for greed, brought a different community who inexorably modified not the technology itself but its usages. What was initially a potential infrastructure for exchange of value became a way to speculate, buy and sell goods and services banned, ransomware, scam payments, etc).

AI also is fascinating as a research fields. It asks deep question with complex answers. Research for centuries about it lead to not just interesting philosophical questions, like what it's like to be think, to be human, and mathematics used in all walks of life, like in logistics for your parcel to get delivered this morning. Yet... gradually the field, or at least its commercialization, got captured by venture capitalists, entrepreneurs, regulators, who main interest was greed. This in turn changed what was until then open to something closed, something small to something required gigantic infrastructure capturing resources hitherto used for farming, polluting due to lack of proper permit for temporary electricity sources, etc. The pinnacle right now being regulation to ban regulation on AI in the US.

So... yes, technology itself can be fascinating, useful, even important and yet how we collectively, as a society, decide to use it remains what matters, the actual impact of an idea rather than its idealization.