The feud between Sam Altman and Elon Musk just became an infrastructure story. OpenAI's decision to revoke Cursor's API access following SpaceX's (NASDAQ: SPCX) $60 billion acquisition of the coding platform reads as a punitive move, yet SpaceX says OpenAI was handling roughly 5% of Cursor user traffic when the cutoff landed.
The revocation came with a direct statement. OpenAI said it made the choice because it could not be confident SpaceX would use its technology within its terms of service, citing what it described as a pattern of contract violations by Musk's companies. The $10 billion alternative fee written into the original April partnership terms shows both sides had already priced the compute relationship as worth protecting.
The case for reading this as a net positive for SpaceX rests on its Colossus clusters. The system targets the equivalent of 1 million Nvidia (NASDAQ: NVDA) H100 chips, the hardware Cursor itself identified as its key scaling constraint before the deal. SpaceX acquired Cursor at a 15-times revenue multiple on roughly $4 billion in annualized revenue. Folding that distribution into Colossus eliminates reliance on rival labs and converts a supplier risk into an owned asset. Cursor's developer dataset, including edit histories, completions, and agent traces, now feeds directly into those clusters. The parallel to SpaceX's rocket economics is direct: the company drove launch costs from roughly $10,000 per kilogram toward $100 by owning the full stack. This is the same play, applied to AI.
The counterargument deserves space. Cursor users will face disruption during any transition to proprietary Grok-powered models, and execution on in-house training is uncertain. OpenAI's forthcoming Astra model stays off the table, narrowing Cursor's frontier-model options in the near term. Anthropic has signaled increased Claude support, which softens that gap, but whether Grok can substitute at scale remains unproven.
On balance, the OpenAI cutoff functions less as damage and more as confirmation. SpaceX closed at $141.50 on Friday, giving it a market capitalization of roughly $1.92 trillion, up from $1.77 trillion at its June 12 IPO. The $60 billion Cursor acquisition represented roughly 2% to 3% dilution at closing. Analysts put average price targets near $219, implying more than 50% upside from recent levels, with some models forecasting revenue growth exceeding 100% over three years. The line to watch is whether SpaceX converts the Colossus hardware timeline into competitive proprietary models before that analyst thesis starts to fray.