I don't really consider working in a music store any more related to the music industry than in selling stereos. Sure, there is a romantic notion to working around instruments and other musicians, and there is plenty of potential for networking, but the reality is you're working for commission, under pressure from floor managers that are pushing the hard sell and focussing on whatever ads are out, and you just might have to curb or at least bend your ethics against recommending certain pieces of gear simply because it's numbers first, opinions second. You're only going to get so far in a big chain by being 100% honest about a crap piece of gear that's on sale.
At the end of the day you can be motivated and knowledgeable and whip smart and friendly but if you aren't selling anything you are toast unless you own / run the joint.
Where you are now you are learning the building blocks of a lifelong specialized career, vs. being, simply, a salesman. Sure, that is an art that I dare not disparage and a profession unto itself, that can be taken to a bunch of different environments, but I somehow don't think this is your reason for getting into it.
Good luck either way.