Regarding Microsoft as an investor and it's conflict with Apple, keep in mind that Microsoft has already taken a direct investment in Apple buying ~3% of the company about 10-12 years ago for $150 million. The day they bought it it closed at $4.97 compared to $307 today.
Re: Facebook to Raise Series E Funding with Apple as Investor
#11the investment was preferred stock that converted in the early 2000s and they sold the shares in 2003. see: http://justinhartman.com/2007/11/23/microsofts-equity-in-app...