SpaceX's IPO prospectus identifies a $22.7 trillion（約3600兆円） market for enterprise AI software, validating the scale of opportunity that companies like Palantir and Microsoft are already capturing with strong revenue growth.

What happened: SpaceX raised $85.7 billion（約14兆円） in its IPO on June 12 with an initial market cap exceeding $2 trillion（約320兆円）, and stated in its prospectus that it has identified a $28.5 trillion（約4600兆円） total addressable market, of which $22.7 trillion（約3600兆円） is for enterprise AI applications—software that automates workflows, improves productivity, and helps workers make better decisions.

Why it matters: Two established companies are already proving this market is real and lucrative. Palantir's AI-powered software for government and commercial use generated $1.63 billion（約2600億円） in first-quarter revenue, up 85% year over year, with full-year 2025 revenue of $4.47 billion（約7200億円） expected to jump to $7.72 billion（約1.2兆円） in 2026 and $11.2 billion（約1.8兆円） in 2027. Microsoft's Copilot seat additions in the most recent quarter were up 250% year over year, and monthly active usage of first-party agents is up 6× year to date, signaling rapid adoption among millions of users.

What to watch: Microsoft's fiscal Q3 2026 revenue was $82.9 billion（約13兆円）, up 18% from a year ago, with net income of $31.8 billion（約5.1兆円） up 20%, demonstrating that enterprise AI is delivering measurable financial returns alongside the user growth metrics.