Loyalty, dedication and job security are a thing of the past so the minute they slow down they get the axe. No pun intended. So they are probably left with making a few custom high end (well deserved) guitars. I'd imagine if these master luthiers make 1 guitar every 2 months, that's 6 a year at say $5K if not more, thats $30K/year plus whatever social security/pension they get, not to mention the random custom shop order, I'd reckon they do alright. Just look at StewMac, they have Stewart Macdonald and Dan Erlewine, two master luthiers correct? It'll be a shame when they are gone but I'm sure they have had apprentices to keep their legacy intact.