Most people buy functionality. A daw controller is a box with knobs, displays etc. They control the functionality of cubase if is a thousand dollar knob or one dollar knob does not really matter for that. (Yes there could be huge other aspects as quality, resolution, durability etc)
And if it cost a tenth of Nuage the price point will be a problem for Yamaha if they could do the same functions; and all the functions are within cubase so why should they not?