I see these one wheels as occupying a different niche over and ebike. Regardless, it's good to give people options to use what they want instead of everyone being forced into an automobile.
Bike/ebike: car replacement for local trips, or alternative commuting vehicle. Depending on your local bus or rail service, I could also see bringing a bike onboard (ebike might be harder if only because of their weight, unless it folded). Maybe also serving as last mile connections, if appropriate bike security can be provided when parking it.
One wheels and scooters: last mile connection to take you from home to local bus, subway, or rail, and from those places to say, an office