Why would a larger screen mean MacOS or equivalent, keyboard and trackpad? If anything, touch requires larger symbols for interactions and hence would benefit more by a larger screen.with the current state of iPadOS, for me the maximum is 12 inch...anything more changes it to a keyboard/trackpad &desk device rather than a handheld touch device. I would rather use a MacBook Air for those purposes.
but if by some miracle iPadOS becomes highly effective, I dont mean it become macOS, but really effective from a productivity point of view just as iPadOS I would consider.
Productivity from a keyboard and mouse (MacOS) paradigm or from touch paradigm(iPadOS)? We have a new breed of users coming up and these are less attached to the keyboard and mouse. Sure iPadOS can be much better but SoC performance has not reached plateau yet for these devices so we will see co evolvement. Reminds me of Windows Intel in the 90:th and 00.