OpenAI already walked away from Cursor after SpaceX closed. Anthropic went the other way and added compute.
The mechanism isn't loyalty. SpaceX's IPO filing has Anthropic paying about $1.25B a month for roughly 325k Nvidia GPUs in Colossus. Same company now owns Cursor, ships Grok against Claude, and rents Anthropic the chips Claude runs on.
Inference: Anthropic cannot cut Cursor the way OpenAI just did. The customer is also the landlord.
Full piece on Medium (friend link, no paywall):
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