The Motley Fool·2025-11-29 08:45Core Viewpoint - Quantum computing stocks such as Rigetti, IonQ, and D-Wave are facing potential valuation corrections as the technology is still in its infancy and may not be widely useful for at least a decade [3][15][16] Industry Overview - Quantum computing is expected to revolutionize various sectors, including drug discovery, materials science, finance, cybersecurity, supply chain management, and artificial intelligence [7] - Current quantum computing revenue is projected to reach $4 billion by 2030, while AI revenue is forecasted to hit $390 billion by 2025, indicating a significant disparity in market investment [11] Company Valuations - Rigetti, IonQ, and D-Wave are trading at extremely high valuations, with IonQ at 145 times sales, D-Wave at 270 times, and Rigetti at 980 times, compared to Nvidia's 3 times sales in 2015 [13] - Over the past three years, D-Wave increased its share count by 209%, Rigetti by 164%, and IonQ by 77%, leading to significant shareholder dilution [14] Expert Opinions - Industry experts, including Nvidia's CEO and Alphabet's CEO, suggest that practical quantum computers are still 5 to 20 years away, indicating that current market enthusiasm may be premature [12] - The expectation is that the quantum computing bubble may burst as early as 2026 due to the combination of high valuations and the long timeline for technological breakthroughs [15][16]