If your business has 499 or fewer people, you are stuck with Android.
Incidentally, I know of at least one small business (4 people) which would like a mobile app for their employees. They are stuck with apple on the desktop, android on the phones.
I don't know the full details of the decision, since I don't work for that company.
As I understand it control was a major issue. The app was designed to monitor and control a hedge fund (i.e., automated alerts and kill switches while you are at lunch). Hoping and praying that Apple won't break things was simply not an option. Lack of multitasking on the iphone was also a problem.
Incidentally, I know of at least one small business (4 people) which would like a mobile app for their employees. They are stuck with apple on the desktop, android on the phones.