Let me offer another take on this. Leica embodies a philosophy and set of principles that have all but died out except in the luxury end of any market e.g. hand made shoes, bespoke tailoring, in fact hand made and bespoke anything. What's different about Leica is that it has done its damndest to hold its end up as a world wide player i.e. you don't have to beat a path to the workshop door in Solms in the way that you have to trot along to Savile Row if you want a decent suit (not that I've ever been to a Savile Row tailors).
Now there must have been loads of people predicting the demise of Leica for years, yet they have, against all the odds, held on and they've done that in a world becoming increasingly dumbed down by globalisation and people being conditioned to accept mass production at every turn.
I'm fairly sure - but can't prove it - that we are at a turning point in world cultural history and that is dependant entirely on the internet. The net (via forums like this) is a place where people who don't want to be herded like sheep get together and so find that they are not alone. With time, others - who are maybe just curious and looking for alternatives - join them and so a body of knowledge, opinion and attitudes builds up. "What's that got to do with Leica?" you may well ask. The significance is, in my opinion is that the idea of a well crafted product which will last for a lifetime may well be enjoying a resurgence as well as the idea that if you want something that good then you save for it (for a long time if need be) and eventually you get it and treasure it. This is the antithesis of buy it all now on credit and watch it becoming obsolete even before you've paid it off.
Maybe, just maybe, the niche is about to expand.