Elon Musk's lawsuit against OpenAI is revealing the real reason he left the company: his inability to secure controlling equity stakes. During ongoing trial testimony in Oakland, California, OpenAI CEO Sam Altman disclosed that Musk initially demanded a 90% equity stake in the company, a demand that softened but remained focused on majority control. This revelation provides crucial context for understanding why Musk departed in 2018 to launch his own AI initiative, xAI, which later introduced Grok in 2023.

Musk's lawsuit accuses OpenAI of abandoning its founding non-profit mission, claiming he was encouraged to invest $38 billion in 2015 to benefit humanity. However, Altman's testimony paints a different picture. According to Altman, Musk was aware from the start that OpenAI planned to shift direction and actively sought controlling equity stakes.

"An early number that Mr. Musk threw out was that he should have 90 percent of the equity to start. It then softened, but it always was a majority," said Sam Altman.

Sam Altman, CEO at OpenAI

The core disagreement centers on a fundamental principle: OpenAI was founded on the belief that no single person should control artificial general intelligence (AGI), a theoretical AI system with human-level reasoning across all domains. Altman explained that Musk's unwillingness to commit contractually to relinquishing long-term control created significant discomfort among the founding team.

"The fact that Mr. Musk was unwilling to commit in writing to something contractual where he would not have long-term control made me very uncomfortable," explained Sam Altman.

Sam Altman, CEO at OpenAI

Why Did Musk Leave OpenAI and Start xAI?

The trial testimony suggests Musk's departure was driven by his inability to secure controlling interest in OpenAI. After leaving in 2018, he pursued his own AI initiative, xAI, which debuted Grok in 2023 as an "unfiltered" AI chatbot designed to compete directly with OpenAI's ChatGPT. However, the competitive landscape has shifted dramatically against Musk's venture.

Grok's market performance has declined sharply since its January peak. According to AppMagic data reported by the Wall Street Journal, Grok downloads fell to 8.3 million in April from over 20 million in January, despite integration with X (formerly Twitter) and new feature releases. The chatbot also faced backlash for generating unauthorized obscene images, which could complicate SpaceX's anticipated initial public offering this year.

How Is Grok Performing Against Competitors?

Enterprise adoption data reveals a stark competitive disadvantage for Grok. An ETR survey conducted in March found significant differences in corporate usage across AI chatbots:

• Claude Adoption: 48% of respondents reported their companies use Anthropic's Claude and intend to continue, up from 21% a year prior
• Gemini Growth: Google's Gemini climbed to 40% adoption from 27% year-over-year
• Grok Stagnation: Grok saw only modest growth to 7% from 4%, indicating minimal enterprise traction

This data underscores a critical challenge for Musk: while he controls the distribution channel through X's massive user base, Grok has failed to convert casual users into committed enterprise customers. The gap between consumer downloads and business adoption suggests that Grok's "unfiltered" positioning may appeal to early adopters but lacks the trust and reliability that enterprises demand.

Ways Musk Could Monetize xAI Before a Potential IPO

Facing mounting pressure to generate revenue, Musk has explored unconventional strategies to make xAI profitable:

• Data Center Leasing: Leasing computing power at the Colossus 1 data center near Memphis to competitors like Anthropic could generate billions annually
• X Integration Revenue: Monetizing Grok's integration with X through premium features or enterprise access
• Enterprise Licensing: Offering Grok as a white-label solution to businesses seeking an alternative to ChatGPT or Claude

The data center leasing strategy represents a particularly unconventional approach, as it would involve Musk profiting from funding his direct competitors. However, such arrangements could provide the capital needed to scale xAI's operations before any public offering.

What Does This Trial Mean for OpenAI's Future?

The lawsuit carries significant implications for OpenAI's anticipated initial public offering later this year. Musk is seeking $150 billion in damages from OpenAI and Microsoft, along with the removal of Altman and Brockman from leadership. If successful, the outcome could reshape OpenAI's governance structure, leadership team, and product roadmap for ChatGPT and other tools.

The trial also exposes a fundamental tension in AI governance: whether concentrated control by a single visionary accelerates progress or creates unacceptable risks. OpenAI's founding principle that no individual should control AGI directly contradicts Musk's historical approach to leadership at Tesla and SpaceX, where he maintains significant personal control. This philosophical divide likely contributed to the breakdown between Musk and the OpenAI founding team.

As the trial continues, the testimony reveals that Musk's departure from OpenAI was not primarily about mission drift, but rather about his inability to secure the controlling equity stake he demanded. His subsequent launch of xAI and Grok represents a second attempt to build an AI company under his direct control, though early market data suggests this strategy may not translate to competitive advantage in an increasingly crowded AI landscape.