Many musicians make successful livings while not becoming famous rock stars. There are the journeyman (and women) club musicians doing popular covers, and there are the pro's doing original music while playing at smaller venues and putting out albums on small labels.
Tuck Andress has likely not crossed most people's radar, but he's a wonderful guitarist who has worked with his wife Patti, for many years as Tuck & Patti. He started as a conventional rocker, like most of us, but on the way developed a truly unique style that owes as much to Wes Montgomery as Jimi Hendrix.
Proof? Castles Made Of Sand/Little Wing: