Apple didn't put arrow keys on the first Mac either. A couple of years later, they did. You know why they waited? Because they wanted to make sure apps that were written to take advantage of the new UI, rather than ported from purely keyboard driven UIs. Why would they put a mouse UI on their first tablet, particularly when Microsoft has demonstrated what a mediocre result that gets you.

I see no reason why, having established touch UI patterns on iOS devices, Apple would have any reason not to start introducing such things on the desktop.

And really, have you been in a pickup lately? They have a lot of car like amenities, like antilock breaks, air conditioners, decent stereos, etc.