"MongoDB, the most widely-adopted NoSQL database, recently raised $150 million dollars on a $1,200,000,000 dollar valuation. Yes, that’s more than a billion do

"MongoDB, the most widely-adopted NoSQL database, recently raised $150 million dollars on a $1,200,000,000 dollar valuation. Yes, that’s more than a billion dollars for a “boring” database company built around pure open source software!" How do they make a profit (if they do)?