Softbank CEO Who’s Invested $64 Billion in OpenAI Says It’s “Blasphemy” to Mention the AI Bubble
SoftBank CEO Masayoshi Son has committed over $64 billion to OpenAI, more than any other single investor, and now dismisses concerns about an AI valuation bubble as “blasphemy,” even as internal company voices warn the bet could collapse. The stance matters to institutional investors because it signals how one of the world’s largest tech investors is positioning capital deployment and risk tolerance at a critical inflection point for AI infrastructure valuations.
- SoftBank has committed over $64 billion to OpenAI, exceeding any other investor’s stake in the company.
- Son declared concerns about an AI bubble “blasphemy,” arguing the current AI revolution is “more than 10x, probably 50x bigger than dot-com.”
- Bloomberg reported internal SoftBank staff warned Son was “star-struck” by Sam Altman and cautioned the deal could “blow up in his face.”
- $64B SoftBank’s committed investment in OpenAI versus all other single investors combined
- 50x Son’s stated scale of current AI revolution relative to dot-com bubble magnitude
- 2019 Year SoftBank’s WeWork investment collapsed after major losses materialized
SoftBank’s $64 billion commitment to OpenAI represents the single largest bet by any investor on a private AI company and underscores the scale of capital flowing into artificial intelligence infrastructure at a moment when valuation scrutiny is intensifying across technology markets.
During SoftBank’s annual general meeting this week, CEO Masayoshi Son responded to mounting concerns about unsustainable AI valuations by directly challenging the premise itself. “I think it’s blasphemy against AI if you say it’s a bubble,” Son told shareholders, according to Reuters. “It’s just the beginning.
AI’s potential will be unlocked.” The comments arrive as major tech sell-offs have renewed investor debate over whether astronomical AI valuations, and the data center infrastructure spending they have spawned, are justified by genuine technological and commercial breakthroughs or instead reflect speculative excess reminiscent of the dot-com era.
Son Positions AI Boom as Historic Inflection Dwarfing Dot-Com Scale
Earlier this month, Son made explicit comparisons between the current AI buildout and prior technological cycles to frame his conviction. He argued that today’s artificial intelligence revolution represents “more than 10x, probably 50x bigger than dot-com,” referring to the late-1990s stock market frenzy that famously collapsed and wiped out trillions in value.
That framing is intended to justify massive capital commitments to AI infrastructure, including SoftBank’s partnership with OpenAI, announced publicly when Son and OpenAI CEO Sam Altman sat alongside President Trump at the Oval Office in early 2025 to unveil a $500 billion AI infrastructure initiative called Stargate.
Son did not deny that corrections or crashes could occur in AI markets, but suggested they would represent buying opportunities rather than terminal failures for the sector.
Drawing on SoftBank’s survival of prior downturns, Son pointed to historical precedent. “If you look at the history, electronics and motorization crashed in 1929, but went up for many, many years, for the next 100 years after that,” he said.
“So there may be some correction, but that will be the best investment opportunity to me.” The argument reflects a longer-term thesis: even if AI markets experience a sharp valuation reset, the underlying technology and its economic applications will compound over decades, making entry points during downturns attractive rather than dangerous.
Internal SoftBank Dissent Over Star-Struck Altman Bet Undermines Unity
Yet Son’s conviction has not unified SoftBank’s leadership or investor base.
In explosive reporting by Bloomberg last month, insiders within SoftBank described deep unease over the OpenAI commitment, with staff members warning that Son had become “star-struck” by Sam Altman and was being “taken for a ride.” Multiple current and former employees cautioned that the deal “could blow up in his face,” citing OpenAI’s severe cash burn rate and its struggle to deliver revenue-generating products at the scale required to justify its valuation or capital needs.
OpenAI has become one of the fastest cash-burning companies in private technology history, spending capital at a pace that demands continuous funding rounds and leaves limited margin for execution failures.
The internal skepticism carries weight given SoftBank’s recent investment track record. While Son did navigate SoftBank through the dot-com crash of 2000 and the COVID-19 pandemic, the company also made major investments in WeWork, a coworking space startup that collapsed spectacularly in 2019, leaving shareholders with massive losses.
The WeWork episode demonstrated that Son’s conviction and ability to survive sector downturns do not insulate SoftBank from picking individual companies that fail fundamentally, regardless of the sector’s long-term viability. That precedent has made internal voices more cautious about replicating the OpenAI bet without additional evidence of durable business model execution.
Institutional Investors Face Conflicting Signals on AI Capital Allocation Timing
For institutional investors making allocation decisions, Son’s public stance and SoftBank’s $64 billion bet function as a critical signal in a market divided between those viewing AI as a genuine multi-decade productivity revolution and those treating current valuations as unsustainable.
SoftBank’s scale, as one of the world’s largest technology investors with a decades-long track record of billion-dollar bets, means its capital deployment commands attention even from skeptics. The Stargate partnership with OpenAI and Trump administration backing adds a policy dimension that further legitimizes the infrastructure spending narrative.
However, the Bloomberg reporting of internal dissent also signals that major institutional players are not uniformly convinced. The gap between Son’s public rhetoric dismissing bubble concerns and private staff warnings about execution risk suggests institutional investors should not treat SoftBank’s commitment as a unified institutional endorsement.
Instead, the investment appears driven by Son’s personal conviction and appetite for concentrated bets, informed by his track record but not necessarily reflecting deeper due diligence consensus across the organization.
The stakes for institutional capital allocation are unusually high: if Son is correct about AI’s 50x scale relative to dot-com, early large commitments will compound into extraordinary returns; if critics are right and valuations reset sharply, the losses will be correspondingly severe.
Institutional investors now face a key decision point: whether to interpret SoftBank’s $64 billion OpenAI bet and Son’s public defiance of bubble concerns as confirmation of a genuine technological inflection justifying current valuations, or as a cautionary signal that conviction and star power can override disciplined risk management. The answer will become clearer over the next 12 to 18 months as OpenAI’s capital efficiency, revenue growth, and product delivery either validate Son’s 50x thesis or begin to vindicate internal SoftBank skeptics, making the timing of individual institutional deployment decisions into the AI infrastructure build-out one of the highest-stakes capital allocation choices in 2025.
