[tomsem]

For me, the main issue with iOS as a 'productivity' platform is its lack of flexibility when it comes to user input. Yes, you can pair a keyboard, but you still have to constantly lift a hand up to touch the screen to do many things. You cannot pair a mouse or trackpad to simulate touch. Simple things that just work in Android or Windows, like using arrow keys to turn a page, or to move focus around, don't work with most apps.

When iPad first launched, they were astute enough to offer a keyboard made for use with it. But then they dropped it. As a result, most iOS apps typically do not include any keyboard navigation features (apart from Accessibility, if the app implements that).

And until now, using a stylus with an iPad seemed like heresy as far as Apple was concerned. Companies that tried their best via Bluetooth to create pressure-sensitive experience via their respective SDKs were fighting an upward battle, and often losing. Even simple things like handwriting do not work well (until the Pro).