I think the OP starts with a wrong premise. Just check original prices and use an inflation calculator. A Leica M3 in 1954 cost the same as an M4 in 1966, an M5 in 1971, an M6 in 1984 ... around $3,500 to 3,750 in today's 2015 Dollar. Maybe that's 20-30% less than a Leica body today.
When I was a student in 1983 I worked for 4 months and could barely afford a Leica with one of their cheapest lenses. If a student today works as a Starbucks barista for 4 months, the student will make $6,400 which would give him/her an M7 with a cheap (maybe slightly used) lens.
The slight increase compared to "yesteryear" could be explained by 1) Leica having to operate their own stores because almost all camera stores have disappeared, 2) expensive production and labor costs, 3) small production runs, and 4) Leica is fully exploiting their niche market situation, catering to people who don't need but want to own a Leica. That was different in the 40-60s when there wasn't much choice when you wanted to buy a decent camera. Even Cartier Bresson said that the bought a Leica because there wasn't much choice and he admitted that all he could afford was one body and one lens for a long time.
What alienates me are not the prices but their ridiculous special edition models, like the Hermes M9 which was a slap in the face for every serious photographer. On the other hand, they make some of the finest cinema lenses for film makers and do seem to care about professionals.
Instead of bashing Leica, we should appreciate their amazing mechanical devices, acknowledge that they do what they seem to think is best to keep them afloat, which is no easy task in today's throwaway society and overabundance of cheap electronic gadgets. Also, how many companies have three film (!) cameras in their current catalog, have free photo exhibitions in their stores, organize juried exhibitions, publish printed photo books, a fine magazine, and host workshops and photography events right in the middle of your community? Name one other camera manufacturer who does that!
I find it funny that so many photographers complain about Leica's high prices. Have you ever heard a bird watcher saying that he is alienated and offended by the high prices of Leica or Zeiss binoculars? Of course not, they either buy one or they don't and move along without whining about it. 😉