Good point. The Internet has really allowed for niche markets to flourish where it's possible. Your guitar example is quite apt.

Of course, in some arenas it's more about quantity than quality. There was a time when getting a book published was quite a feat; sure, there have always been the small publishing houses and vanity presses, but getting your work out to the masses meant one of the big guns. Now anybody can easily and inexpensively become a published author thanks to print on demand and e-books. Is this a good thing? I don't know, but this path is going to lead me into a rant about people responding that they're "writers, too!" when I say that I'm a freelance writer...and I don't want to go there. =)