Why hasent microsoft or any other company picked this guy up.

If any of you have ever used windows phone or heard them talking you must know this guy. Rudy Huyn makes apps for windows phone. This guy made 6snap 6tag etc. Windows phone people say he makes better apps then the officials. I never use social networking so I can't back them up. But from word of mouth I am thinking this guy makes such good apps why wasn't he picked up by some corporation. I heard he makes all of this in his free time.Any windows phones user like to comment.

P.S I used windows phone for a month but left it sadly not for apps or anything. It was great. just founder a better phone for the money.