Mom n pop stores carrying gear you can afford at good prices will not come back if GC goes under. Period.
Two good friends of mine own a mom n pop. They started out carrying nicer gear and providing great customer service. These days, live music gear is almost an annoyance to them. The only things that sell are entry level pieces and they only sell them to people who have money burning a hole in their pocket and can't wait 48 hours for an internet order to arrive for 15% less than they have to charge. Their profits come from church, school and commercial PA installs as well as band and orchestra rentals and maintenance contracts. They make virtually nothing on the kinds of gear we here at TB frequently use. They honestly wish they could drop all of that stuff but it creates foot traffic. Guy comes in for a new microphone for his church and you sell him a new PA install. Guy comes in for guitar strings and you sell his band a new compact PA system. That's the only thing basses and guitars and amps are good for in their world. Starter packs this time of year makes them about $12 a pop. Hardly worth stocking the 30 or 40 they will stock. But they do it hoping this young guitar players come back and buy a PA in 5 years or their mother signs their sister up for a flute rental.
The nearest GC is 75 miles away. What kills the market for them now is the interwebz.
I'm not beating up the interwebz or cryijng for mom n pop stores either. I like the free market just the way it is. Some survive and some don't. But their competing for our business always works out for us in the long run. It wouldn't hurt my feelings at all to see Fender Pro Player and Rumble stuff in Sam's Club for a hundy less than GC sold it for. D'addario XL Nickels and Chromes for $9.95 a set on the shelf at Wal-Mart? Sign me up!
I don't need a dear old friend with a smile and a cup of coffee waiting on me when I go to buy a bag of orange picks and a Fast Fret. I don't have time for the coffee anyway.