Apple is even further ahead than having a cable. You can directly mirror any iPAD wirelessly to an Apple TV that share a wireless network and get a 720p HD signal over the A.TV's HDMI. Full audio, full video. Major corporations I work with and for are currently outfitting conference rooms with them so people can project from their iPad during meetings. No muss, no fuss, no looking like an idiot while 3 PhD's figure out how to project powerpoint from the laptop at the wrong resolution so the slides look like crap. And NO cables. Walk in, turn on projector, turn on mirroring, present.
For mobile productivity, try using Keynote on the iPad. Then consider exactly how many people really need the extra screen real estate & computational horsepower. (Dev's, engineers, artists, video work, ...) Students and academics are already switching over completely.
For what its worth, I have seen companies firing/ reducing the Windows specific developers on a massive scale. Enterprise level software can be delivered via HTML 5, you can hire 1 UI developer to cover the iOS specific. You have to hire 4 to support the windows ecosystem. You might be able to cross purpose designers and some of the management / support, but still going to need 4 QA teams to support the 4 platforms. (plus the quirks that each specific device will have) And when you know your clients (Fortune 500 companies) are purchasing iPads for their employees at 10,000+ units a quarter, WHY are you NOT producing for iOS? Your business wants nothing to do with the fastest growing tech platform since the Internet?