I agree that Microsoft does not craft their tablets well. However, the casue of that is not that their intial vision is wrong. It’s just that Microsoft is lack of the capability of soft-hardware integration.
I think it's more because a desktop OS just sucked to use on a touchscreen device. No amount of integration would have gotten around that problem.
I believe iOS has been used in Job’s original plan as an incubator for iPad. When the first iPad was designed, Apple did not know how to integrate touch input with the other existing inputs. Why should that integration be difficult? Touch is just another input method. When a new input method was invented before, such as mouse, it was incoorporated into the old os.
My take is that Apple had a very specific manner in which they envisioned the ipad being used. For example, if I am using the iPad while lounging on the sofa, or when I am walking around a room, I am not in a position to use a mouse, and so mouse support is superfluous.
Not to mention you expressly want developers to optimise their apps for touch and direct input. In this context, not allowing mouse support sends a very strong message to app developers - don't bother trying to design your app layout around pointers, because it's never going to be a thing.
You can't have your cake and eat it too. Your user interface is either optimised for touch, or keyboard and mouse, and you have to draw your line in the sand from day one. Apple chose the former, and I think they made the right call.
My concern around allowing mouse input is that this might open a Pandora's box, where developers start designing their apps around the expectation that users start navigating their iPads with a mouse, which in turn disadvantages those who would control their iPads using the touchscreen.
At the end of the day, I am not convinced the iPad should have mouse support.
Take ‘copy and paste of text’ as a study case. There would not be tough technical problems to stop Touch and mouse click from working interchangeably. So the separation between iPad and iMac does not come from Touch input. I think it came from the weak power of A-chips for the iOS devices.
I think it's more that mouse support simply didn't make sense on a device designed to be navigated using your fingers, and which was by its very design intended to be used away from a desk.
In the near future when the A13 chip arrives, iMac will have it replacing Intel and become a huge iPad while iPad will be a thinner, lighter, and portable iMac.
Good lord, no.