Depends on the user. For example, the developed world has a rapidly aging population. Many elderly people primarily need support for long distances or uneven surfaces. Stairs also become treacherous as hips and knees age. I can see a potential market for a device that can extend their independence and is less bulky and unwieldy than a wheelchair or a scooter.

Also, if the concept works well, I see no reason that they can't add alternative seat designs. As I understand it, getting stable walking is generally a robotic challenge. Presumably easier to start with a simpler chair and then build on that.