Thinking about MS's recent acquisitions, how long will it take to recoup the money they spent on: LinkedIn, MineCraft and now GitHub?
LinkedIn: $26b
MineCraft: $2.5b
Github: $7.5b
LinkedIn: $26b
MineCraft: $2.5b
Github: $7.5b
^ from wikipedia
If they sold each for $10, then thats $1.5 bil (if my maths right). So I think it's safe to say that they have not made their money back ... yet.