I did install OSX 10.2 Jaguar a couple of weeks ago on PearPC because my son is obsessed with the different releases that came out before he was born. I wanted to show him all that pin-stripey goodness.
They of course would have to buy a chip maker that can make 64 bit ARM CPUs with at least quad core to save on costs. I think Apple wants to get rid of buying chips from Samsung because of the iOS vs. Android lawsuits.
All assuming, of course, that Apple is interested in such a purchase.