My first thought is about how headphones have become a tacit treatment for agoraphobia. And agoraphobia is also highly correlated with hypochondria. So if you a

My first thought is about how headphones have become a tacit treatment for agoraphobia. And agoraphobia is also highly correlated with hypochondria. So if you are willing to pay $500 for noise cancelling headphones that help separate yourself from those around you, I suppose there might be a market for this.