I think I wasn’t very clear when I said “support”, my bad. Trying again…
Apps made for keyboard and mouse suck on touch&pen devices and vice versa (even if the device is basically able to run both) because most devs pick just one mode of interaction and optimize their UI for it, while the other mode is just “supported” as an afterthought.
That’s why I believe Apple decided to have separate devices for each mode of interaction, each with its own distinct OS&app ecosystem.
Apps made for keyboard and mouse suck on touch&pen devices and vice versa (even if the device is basically able to run both) because most devs pick just one mode of interaction and optimize their UI for it, while the other mode is just “supported” as an afterthought.
That’s why I believe Apple decided to have separate devices for each mode of interaction, each with its own distinct OS&app ecosystem.