It would also require the whole thing be designed differently.
The hinge would need to be sturdy enough to not wobble when the user is dragging or tapping with a finger. The body would need to be heavier than the screen by a big enough margin to not topple the whole thing over when tapping.
People use a lot of web apps that were designed mobile first, and using them without a touch screen sucks.
You wouldn't use the touch screen as primary input, but it would make a lot of things much easier.