First off, I would allow drunk people to rent out the showroom on weekends. I would also run a "hardware as a service" model where the customer doesn't actually own any of the gear but for a monthly subscription price they can swap out gear upon request. I do all installations and networking. Customers are charged for each service call. Different subscription tiers give you access to higher-end gear. Lowest tier is $100/mo., highest is $500. At the highest tier, for $6,000, you can enjoy a six-figure system in your house for an entire year, and then change it out next year if you want. You never have to pay for repairs and you're not tied into any piece of gear. You get to listen to everything hi-fi has to offer in your own home for as long as you want. Any gear I own that's more than 5 years old gets auctioned off. I would need about 50 customers at different service levels to make a decent living. But I'd be busy af.
