Microsoft has just turned an $11 billion startup into a feature in Word. It wasn’t an acquisition or a partnership. It’s a feature. Harvey raised $200M at a $11B valuation in March. $190M in annual recurring revenue. 100,000 lawyers. Charged ~$1,200 per lawyer per month because it was the only tool in its category that worked. Yesterday, Microsoft’s CEO announced Legal Agent, directly inside Microsoft Word. Same .docx. Same track changes. No second login. No migration. It comes bundled with Copilot at $30/month—something nearly every law firm already pays for. 40x cheaper. Now consider where this came from. Microsoft built the agent using engineers from Robin AI, a legal AI startup that collapsed in 2025 after failing to raise $50M. It laid off a third of its staff. Ended up on an insolvency marketplace. Robin’s CTO now leads the Microsoft Word team. At least 18 engineers made the same move. These people knew how to make legal AI work. They tried to survive as a startup. It failed. Microsoft picked up the pieces and delivered the product Robin never had the reach to distribute. Lawyers don’t switch tools. Word has been where contracts are drafted, reviewed, and tracked for 30 years. Microsoft didn’t need to convince anyone to adopt anything—the product was already installed on every machine. Harvey still holds one trench: high-stakes litigation, M&A, deep integrations with iManage and NetDocuments. That works for AmLaw 100 partners charging $1,500/hour. But what about the millions of lawyers worldwide drafting NDAs, reviewing vendor contracts, and updating templates? That’s exactly the segment Legal Agent is eating—for $360/year. Harvey’s $11B valuation only makes sense if legal AI remains a standalone product. Microsoft has just embedded it inside Word. And if you think this only applies to the legal market, think again. Any vertical AI startup built on top of a platform giant faces the same risk. When the platform owner decides to enter, it’s over. It’s not a matter of if. It’s a matter of when.