http://www.fastcompany.com/3053695/the-future-of-work/where-former-google-apple-and-amazon-employees-want-to-work
"IBM And Microsoft Employees' Next Move
Both IBM and Microsoft employees would entertain a move if there was more stability than risk. IBM’s employees were the least adventurous of all the employees surveyed, with only 23% saying they’d join an early-stage startup."