This already exists, in the form of Apple's enterprise development program. Shops can install internally, develop and distribute internally, do pretty much whatever they'd want, since it doesn't go through the App Store.
It's quite popular, too.
That's useful info. I hadn't research the topic. Folks have asked me "why don't you make an iThing app?" and my general view is, do you really want the app that accesses your business data sitting on a public storefront for just anybody to download and attempt to login to?
Technically, the EDP solves that. Though my next barrier is, do I really want to fork off a dev team to learn and master that platform, when I can just write a web-app that everybbody can code for? I choose the latter.
Case in point, I've one client who wants to buy iPads for all his sales guys, so they can get sales data and handle orders in the field. At $500 a pop, I'm inclined to hope an Android tablet of lesser price and decent quality (what care I what other apps it has, I only want the browser to not suck and the internet to be fast).
On relique's comment. I kind of asssume the other guy meant "complete" to mean features that Apple didn't do on purpose that another vendor could get away with.
I have plenty of room on my 16GB iPad with just WiFi. Don't need an SD card. I think some folks want it for the "just in case" scenario. Or for practical transferring of data.
I do wish Apple were a bit more practical with getting data in and out. It's understandable that each application is effectively buffered from each other. But why do I have to email myself a Word document to work on it in Pages?
If Google Docs came out with a proper client app, they'd nail that little problem.
I also don't like that Apple has blocked certain apps on the basis that it competes with their own product line. Amazon snuck their Kindle reader in, but Sony was too late with their E Reader app.
When my Droid finally gets here (missed it at Lunch, so I have to wait another day for Fedex), I reckon I'll see what the Android can and can't do for me in practical terms. I do know I'll get my Sony Reader so I can read the last Dresden Files short story anthology my wife bought.