In researching my earlier comparison of Olson and Gurian, I came across this old post by "Airguitarro" on AGF. He hasn't posted in a number of years, over there, but he says it far better than I can.
"After Jim Olson stops building and James Taylor stops performing, it is an open question how long Olson guitars will be remembered. I suspect that 25 - 30 years from now, his guitars may well only be remembered and valued by guitar buyers in the same way as Gurian Guitars and Mark Whitebook guitars are remembered despite their quality from an objective point of view. And this is the most optimistic projection IMHO.
Once production ceases and unless the effect of a cult following arises (e.g,. for vitnage Martins or D'Aquisto and D'Angelico archtops) to inflate demand despite loss of production and promotion of the brandname, time will eliminate eventually the effect of star artist endorsements and promotion and return the brand to obscurity. However, unlike the First Golden Age of Lutherie when the number of independent luthiers were far fewer, the Second Golden Age of Lutherie will end with a virtual and veritable sea of quality guitars made by hundreds if not thousands of skilled and gifted luthiers. Therefore unlike the case in the past when the quality of a D'Aquisto clearly lifted such guitars above the few true competitors that it had, an Olson would have to contend with thousands of Ryans, Hamblins, Traugotts, Manzers, etc etc which would clearly at least equal an Olson in objective build quality.
Not to mention the luthiers who would be working 30 years from now (if the wood does not run out)."