How to Tap the Ripe Mobile Enterprise Segment

Before I started a mobile enterprise anything I'd want answers to the following questions:

1) Delivery? How are enterprise apps going to be distributed? Right now almost all mobile software distribution channels are directed at the general consumer. This, obviously, won't work for enterprise, yet no-one has announced a solution to this problem. This also brings up the issue of authentication.

2) VPN? Blackberry is the only platform I know of to tackle the problem of VPNs. As in, within a native application, I can direct traffic over the VPN. There may be support for this on Windows Mobile...

3) Control: There is no centralized way to control access within 3rd party applications. My IT department can't lock me out of an app (aside from doing a full phone wipe, which only happens on the iPhone and the blackberry) they certainly can't control what I access from within the applications I download.

I'm starting to feel like a broken record online and amongst my friends. Mobile has a bright future but right now it's got systematic, challenging problems. Now's the time to start in, but if we move too fast we'll create another mobile.com bubble.