Now as for this great hearing device... did you read the disclaimer? Obviously not.
It plainly states that it might help only those with a "mild to moderate" hearing loss. By the time a person reaches the final years of their lives (and it can happen much earlier) their hearing loss is more often than not well beyond that initial; stage. That's when the professionals come into play.
Secondly and this is the problem many hearing aid devices have and that is background noise. While your BOSE unit might be a bit better than some of the other off the shelf one size fits all units the manufacturer recognizes that it's unit can still present the purchaser with a similar back ground noise potential.
Yes, professional units are costly, however if Medicare were to cover hearing aids the hearing service will have to decide if it's willing to take Medicare assignment or risk losing a major share of it's business. This in turn could help reduce the staggering cost of professional grade hearing aids.
Yes, your unit might be able to help those with a "mild to moderate" hearing loss if they are not covered under an insurance plan and have limited means. At the same time however what the manufacturer is saying that it's product is generally designed to be able to provide a limited amount of relief for a limited amount of time meaning that there is a cutoff point where the pros have to get involved. And here's the good news....Hearing loss is hereditary.