That's just one use case. On the other hand I can tell you from personal experience no hearing aid I've tried so far can replace natural hearing. It can augment

That's just one use case. On the other hand I can tell you from personal experience no hearing aid I've tried so far can replace natural hearing. It can augment the frequencies you're less able to hear, but for some reason being able to hear them naturally vs via amplification works far better. And hearing loss is also a byproduct of aging, so there are far more people out there who'd like to regain their hearing than adults who might decide on this treatment vs a cochlear implant.