Internal Microsoft emails from 2018, unveiled during the Musk v. Altman lawsuit, show that company executives initially had reservations about making a significant investment in OpenAI. Leaders, including CEO Satya Nadella, were reportedly skeptical about OpenAI's ambitious and costly plans before committing to their first $1 billion investment.
Despite these doubts, a primary motivation for proceeding with the deal was the strategic fear that withholding support would push OpenAI into a partnership with a key competitor, specifically Amazon Web Services (AWS). This concern ultimately proved decisive, leading to an investment that has since grown to a reported $13 billion and has become central to Microsoft's AI strategy. The documents provide a glimpse into the competitive pressures that shaped one of today's most crucial tech alliances.