I think you might be a little confused about just what a "distributer" is.
I'll use Ibanez as an example and I honestly can't guarentee some of the details, this is just how *I* have come to percieve it as I investigated this.
The distributer is the company that gets the bulk shipments of the guitars direct from the factory in Japan or Korea. In the UK there is only 1 Ibanez distributer. That's Headstock who are based in Birmingham. Headstock add a sum of money to the price that they paid for the instruments and then sell them to all the shops in the UK that buy officially imported guitars. They buy them at trade prices from Headstock, Machinehead, Academy of sound, Sound Control etc. etc. They all come from Headstock. It's headstock that only gets the shipments from Japan once or twice a year. The stores then add another sum of money and sell them on to you and me. it's this final figure that is the RRP.
I beleive in the USA there are 2 Ibanez distributers, Chesbro (on the west coast) and
Hoshino USA on the East coast. These are the companies that will supply Sam Ash, Guitar Center, and the mom and pop stores too. Again these guys (Hoshino USA and CHesbro) buy direct from Ibanez in Japan.
OK, back to the UK.
Ibanez Japan will not give you a distributer licence. They have an exclusive deal at the moment (again as I understand it) with Headstock. Headstock then sell on these guitars to the shops, so all the
Ibanez guitars in the UK (that have been officially imported) go to Headstock in birmingham, then out to the local shops. The local shops have to buy X amount to qualify for the bulk deal from the distributer, which is why the chain stores with greater buying power can undersell the independent stores.
And yes you need to find a niche. Something that makes me (the consumer) want to buy something particular from you (the seller) in particular rather than buying it from somewhere else, or buying something else entirely.
For example, If I want a dirt cheap brand new Ibanez, I'll buy it from a large internet chain store based in the US, you know the one

as a UK based seller I doubt that you'll be able to compete with their prices and still make a profit. If I want after sales care from a bloke I can go and see in the flesh, I'll buy from Machinehead in Hitchin where the staff know me and they have a great reputation etc. As a new seller without a reputation it would be hard for you to compete with this.
If I want a rare or old Ibanez I'll ask Rich to find it for me, he has that niche pretty much cornered 100% to the point where stores in the UK recommend that you give him a call!
If however you can come up with a cunning plan or can offer something that no-one else can offer, be it the type of guitar, the price of the guitar or the incredible set up of the guitar etc. etc. Then you might just be on your way to making your hobby your job
