They preferably do not. They do defend their lower flank against the coming disruption, e.g. via Costco. MDHearingAid is not part of the group of five, they are

They preferably do not. They do defend their lower flank against the coming disruption, e.g. via Costco. MDHearingAid is not part of the group of five, they are a disruptor. Until recently, the non-medical devices have been simple amplifiers, which are technically not competitive. Rent-seeking because they successfully lobby for Federal regulation that locks out competition by providing a high barrier to market entry.