"@nashvillehifi I have had an audio shop since 2003, beginning in Florida."
I suspect you already know the answer to your own question after 22 years, right?
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Yesterday I visited my local 55-years-in-business audio-only dealer. He’s survived and thrived. I’ve been going there for 45 years. What he stocks, shares, and sells to repeat customers is not regularly available online over the internet. 1) unique products 2) his experience 3) demoing it for them to hear it, multiple times, no questions.
He sells 2-channel audio products and services only. All tube. No solid state. None, not any of the amps, preamps, or speakers he sells are sold manufacturer direct.
Can you offer something unique, interesting, fun, locally - where people will come into your store and decide to learn and listen, then hand over hard earned cash and/or their retirement bucket-list funds for it?