According to Android Community Android's enterprise market share could double by 2018. In recent history, Apple has been making the most headway in enterprise, surpassing Blackberry in many respects and encroaching on Microsoft. But, for many Android is the preferred platform.
ABI research. The firm says that current sales of Android devices as they relate to enterprise solutions is roughly $54 billion. That’s expected to rise to $92 billion by 2018.
ABI measures growth by looking at a variety of handset manufacturers including HTC, LG, Motorola, Samsung, ZTE, and Huawei. While security has been a persistent concern on Android, that isn't so much an issue anymore, and imbedded features such as Google Drive (what used to be Google Docs) are a real selling point.
Source: Android Community