Well, there are squillions of old lenses available.Not if you live in the UK and want to buy lots of legacy lenses!
The sales by volume of such interchangeable-lens film cameras (35mm, let alone the Fuji GX680 and the Mamiya 7) are going to be trivially low. So Panasonic plus Olympus micro 4/3 sales are, by volume, one ninth of that of DSLRs from Canon, Nikon, Pentax, Sony, and Fuji and Sigma (if they still make them) and Cosina (under one or other of its German names) and Leica. This strikes me as surprisingly low, particularly in view of all the hoopla about micro 4/3.The UK has embraced the Micro Four Thirds camera format, making up over 10% of interchangeable lens camera sales (by volume) in December 2009. According to figures from market research company GfK Retail and Technology, around 6,600 Micro Four Thirds cameras were sold in the UK, accounting for more than half of the system's sales volumes in 11 major Western European countries.
Got it: High profit margins on interchangeable-lens cameras (and that's before the customer is urged to buy a "protector" for each lens, etc), but a dismally low 3.2% of sales volume accounted for by micro 4/3.The company's Temax Western Europe fourth quarter 2009 sales figures show that interchangeable lens cameras (DSLR and mirrorless) contributed to around 9.4% of total sales volume in Europe, but approximately 31.2% of the total sales value. Micro Four Thirds accountied for 3.2% of these volumes.