OpenAI Consolidates Power Under Greg Brockman Ahead of IPO — President Absorbs ChatGPT Product, GTM, Enterprise and Compute Portfolios, No Replacement Planned for Fidji Simo

CNBC reports co-founder Greg Brockman will oversee ChatGPT products, go-to-market, enterprise and compute after Fidji Simo's step-down — with no plan to hire a replacement. CFO Sarah Friar and strategy chief Jason Kwon report directly to Altman. Puts revenue pressure on Brockman to justify OpenAI's $852B valuation ahead of an IPO reportedly delayed until 2027; June confidential S-1 already on file.