Well, if you are a developer that travels a lot it would be easier to test some JSP/servlet code or any other kind of code very quickly on your mobile device, and then show it to customers if you would like.
Furthermore, if you are developing .mobi websites locally, it would be great to do it and test it on your phone.
Can we implement enterprise wide applications on Android?
I would say yes, Android would be great for internally developed applications that are run by employees that have the device.
In fact Android is much better for this than iPhone. If you did such an app on the iPhone you'd have to get Apple's approval and place it in the App store for your employees to download. Not so on Android - just make a .apk file and plop it on a web site for your folks to install.
You could even make your application run completely within your firewall if you have secure WiFi deployed on the premises. If you want it to run over the phone company's network or the WiFi at Starbucks then you'll need the appropriate security of course.