What other futuristic ideas popularised by science fiction, will be ruined by their implementation in reality?

For example, AI, Virtual Reality and virtual worlds, and cybernetic implants.
They seemed to be such promising concepts in fiction, but then reality hits, and it is contemporary techno fascists and despots, like Zuckerberg, Musk, and Google doing it, with the sole purpose of corporate and personal enrichment and control, and now I do not want it anymore, because under their regime, it will by inevitably dystopian.