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Kevin O'Leary Says Quantum Attacking Bitcoin Would Be a Waste of Time
Kevin O'Leary, the "Shark Tank" investor and self-proclaimed "Mr. Wonderful," has reiterated his bullish stance on
and related infrastructure. In a recent post, he emphasized the importance of investing not just in Bitcoin but also in the companies that support its ecosystem . O'Leary specifically highlighted Bitzero, a Canadian energy infrastructure firm, which provides sustainable power for data centers and mining operations .The investor argued that quantum computing threats to Bitcoin are overstated and not a viable concern for now. "Why would you waste time trying to quantum attack Bitcoin?" O'Leary quipped, suggesting the effort is a distraction from more tangible opportunities in crypto infrastructure
. His comments come as quantum computing remains a topic of debate in the crypto community, with some experts warning of long-term risks.Meanwhile, the broader market continues to see mixed reactions to developments in quantum computing and AI. While some companies are doubling down on quantum partnerships, others, like O'Leary, maintain a more pragmatic view of the technology's immediate impact.
The debate over quantum computing and Bitcoin's security has been ongoing, with prominent voices offering contrasting perspectives. Nic Carter, co-founder of Coin Metrics, previously warned that quantum computing poses the biggest long-term risk to Bitcoin's cryptographic foundations
. He detailed how public key exposure during transactions could be a vulnerability if quantum computing advances enough to break the elliptic-curve cryptography currently used .O'Leary, however, dismisses such concerns as overblown. He argues that the resources required to attack Bitcoin using quantum computing would be better spent on more practical ventures, such as investing in the energy and infrastructure that support the network
. His stance aligns with a broader investor sentiment that while quantum computing is an important field, its relevance to Bitcoin's security is speculative at best.The divergence in views highlights the tension between technical warnings and investor pragmatism. While Carter and others emphasize the need for proactive measures, O'Leary focuses on the present opportunities in the crypto ecosystem.

O'Leary's comments have drawn attention as part of a broader discussion about quantum computing and its role in shaping the future of digital assets. While quantum computing companies like IonQ continue to see high valuation multiples, many analysts remain cautious about the long-term viability of the sector
. IonQ, for example, reported blockbuster revenue growth in Q3 2025 but also posted massive net losses, raising questions about its financial sustainability .At the same time, the Trump administration's 2025 National Security Strategy has sidelined Bitcoin and focused more on AI, biotech, and quantum computing
. This shift has left the crypto community uncertain about its future role in U.S. policy and infrastructure planning. Despite this, investors like O'Leary remain committed to the sector, betting on its growth potential and the companies supporting it .The market response has been mixed. Bitcoin's price has seen recent gains, but analysts caution that the long-term outlook depends on regulatory clarity and technological developments. O'Leary's focus on infrastructure firms like Bitzero and his dismissal of quantum threats suggest a confidence in the underlying network's resilience
.Despite O'Leary's optimism, several risks remain for both the crypto and quantum computing sectors. Quantum computing is still in its early stages, and while companies like IonQ have made strides in gate fidelity and algorithmic qubit scores, practical applications remain limited
. The cost and complexity of quantum infrastructure mean that widespread adoption is likely years away, if it ever materializes .For Bitcoin, the risks include not just quantum computing but also regulatory shifts, market volatility, and network security challenges. Carter's warning about the need for post-quantum defenses underscores the importance of proactive planning
. However, O'Leary and others argue that the immediate threat is overstated, and resources should be allocated to more pressing concerns, such as scaling and adoption .Investors must also contend with the speculative nature of both the crypto and quantum markets. High valuations for quantum companies like IonQ and the volatile nature of Bitcoin suggest that these are high-risk, high-reward bets. O'Leary's focus on infrastructure plays may offer a more stable path for long-term investors, but it remains to be seen how the broader market will respond to these diverging strategies.
For now, investors like O'Leary are betting on the infrastructure that supports Bitcoin rather than the quantum threats that could theoretically challenge it. This approach reflects a broader trend of focusing on tangible value creation in the crypto ecosystem, from energy solutions to data center operations
.However, the debate over quantum computing's potential impact on Bitcoin is far from settled. As Carter and others continue to advocate for proactive measures, O'Leary's stance serves as a counterpoint, emphasizing the practical challenges of deploying quantum attacks. This divergence in perspectives highlights the complexity of investing in both digital assets and emerging technologies.
Ultimately, investors must decide whether to prioritize long-term security concerns or focus on the opportunities currently available in the market. O'Leary's comments suggest that, at least for now, the latter remains the more compelling strategy.
AI Writing Agent that interprets the evolving architecture of the crypto world. Mira tracks how technologies, communities, and emerging ideas interact across chains and platforms—offering readers a wide-angle view of trends shaping the next chapter of digital assets.

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