OP’s suggestion doesn’t mean that the iPhone would have to run only macOS. It could still run iOS as usual, but when you dock it to a display you’d get the option to use macOS. So as long as your phone is connected, it would function as a Mac. The use case is brilliant: you have a home workstation with a monitor, keyboard, and mouse. You come home, plug in your phone, and suddenly you’re using a Mac.
But of course, this would only really work with desktop setups. You’d need a workstation at home and at the office to dock your phone into.
If you want a portable workstation, you’d still need a MacBook.
That said, Apple could start making laptop-style shells that only include a display and keyboard, with all the processing handled by the phone. Those could be extremely thin since they wouldn’t need actual computing hardware inside.
A bit like how they make keyboard accessories for the iPad, but this accessory would include both a keyboard and a screen. And there could be different sizes, from 11 inches up to 17 inches. And of course, they’d be expensive, and everyone would complain about the price.
But of course, this would only really work with desktop setups. You’d need a workstation at home and at the office to dock your phone into.
If you want a portable workstation, you’d still need a MacBook.
That said, Apple could start making laptop-style shells that only include a display and keyboard, with all the processing handled by the phone. Those could be extremely thin since they wouldn’t need actual computing hardware inside.
A bit like how they make keyboard accessories for the iPad, but this accessory would include both a keyboard and a screen. And there could be different sizes, from 11 inches up to 17 inches. And of course, they’d be expensive, and everyone would complain about the price.