Very true Bill. Both Sherry and Don have gone over my cameras and IMO they are the best around. I hope both of them are training the next generation, who will take over for them some day.
Gerry Smith at Kindermann (Canada) is also extremely good and quite fast. I put him in the same category as Don and Sherry.
In the UK there is CCR and they have an excellent reputation.
http://www.angelfire.com/biz/Leica/
But Kodak and Ilford can't survive on sales to Leica shooters.
They can probably rely on large format shooters for a very long time. Mechanically these cameras are so simple, that they can be kept running by almost anyone with basic mechanical skills. Personally I believe that many of these shooters will return to the techniques of the earliest days of photography, if film should dry up.
Hasselblad claims that they will service V-series cameras, until Sweden turns in to a desert. Time will tell.
Nikon collectors are about as fanatic as they come, so I believe these cameras will be supported for a very long time, but I'm afraid most of these service centers will be in Japan. Here in London I am still trying to find a reliable shop. As it turns out the largest independent service center in town is totally unreliable, unless you were having a digital serviced...
Harry Fleenor in southern California is among the best Rollei technicians in the world, but once he retires, who will service my Rolleiflex?
www.rolleirepairs.com
So, I am worried.
I have a D700 for digital work, but don't love it. I use it as little as possible.
I see the world in Tri-X and can't imagine the day when that would change. Frankly the loss of film would be a disaster for me, because my personal style and vision is heavily dependent on it.
I hope that Leica is true to their word and will continue to service these cameras as long as there is the demand.
I figure that if worse comes to worse I can probably figure out how to keep a IIIc running on my own. Not as nice as an M, but everyone from HCB to Eugene Smith managed to turn out some pretty good work with these. The Nikon F is also fairly simple to service.