Why has quantum computing not yet fulfilled its promise?

Quantum computers have been trapped in a perpetual cycle of unfulfilled potential for approximately three decades. As Adam Curry points out, the technology has consistently been described as being '10 years away' from practical implementation, creating a pattern of delayed expectations that continues to the present day. This consistent '10 years away' timeline has become a recognizable pattern in quantum computing development, suggesting significant challenges in bridging the gap between theoretical potential and practical application. Despite ongoing research and investment, quantum computing remains in this state of promising but elusive breakthrough.