Odds of Hanging On
This is where being a piano shop owner gets tricky. Hanging on to your piano shop will require a lot of dedication and hard work. You'll need to be an expert advertiser and have an entrepreneurial spirit so you can always be on top of your piano shop game. You'll probably have to expand your piano shop to a little more than just a piano shop to be a relevant shop in any town or city.
You might also want to consider offering tuning and refurbishing services, lessons, sheet music, and even some other instruments (and tuning and refurbishing services, lessons, and sheet music to go along with them). Yes, YouTube is a great teacher, but a lot of people like one-stop shopping and personal attention. Offering lessons, instruments to practice on, and Taylor Swift's entire oeuvre as potential practice material is sure to reel those future pianists in.