The advantage of software is the 'soft' part i.e. it's much easier to change than hardware. Unless physical keyboards had mini displays for every key, they're

The advantage of software is the 'soft' part i.e. it's much easier to change than hardware. Unless physical keyboards had mini displays for every key, they're a good design given the 'physical' limitation of their design. A touchscreen displays 'soft'ware that's easy to change and make smarter than physical items.