Because Microsoft is the one who needs to do it - or maybe Apple. Both have an ecosystem that operates in both worlds (though Microsoft keeps killing their pho

Because Microsoft is the one who needs to do it - or maybe Apple. Both have an ecosystem that operates in both worlds (though Microsoft keeps killing their phones and doesn't currently have one) - so they could do it. It's obvious that the iPad could be a Mac now, there's no technical limitation. So the iPhone could be, too.