The don't need to, they got Microsoft to buy a license.
It's interesting that Microsoft chose to purchase a license outright rather than work out a cross-licensing deal. It seems like MS did this to lay the groundwork for Apple to purse their competition in the Android space, since Apple could then go to court and say, "Look, even Microsoft paid for a license!"
> The don't need to, they got Microsoft to buy a license.
I'd be willing to bet good money the the reason that Apple licensed iOS UI patents to Microsoft was to make Microsoft sign something saying that they wouldn't copy the iOS UI too closely, rather than for Apple to make a killing on licensing fees. Making a killing on licensing fees is Microsoft's approach, which they have used successfully against Android.
Apple took this same approach they're taking now back with Windows 1: They licensed Mac OS UI elements to Microsoft, but then ultimately sued Microsoft when Apple felt that Microsoft violated the terms of that license and made a UI that was too similar in look-and-feel to Mac OS.
If anything, this is evidence that Apple is not trying to squelch competition or innovation. They don't seem to mind competition at all, and will even license their technologies, as long as other companies aren't slavishly copying Apple's design.
The don't need to, they got Microsoft to buy a license.
It's interesting that Microsoft chose to purchase a license outright rather than work out a cross-licensing deal. It seems like MS did this to lay the groundwork for Apple to purse their competition in the Android space, since Apple could then go to court and say, "Look, even Microsoft paid for a license!"