Part of the problem seems to be some poorly educated nitwits who cannot seem to distinguish a shrinking market from a dying one. I personally have no doubt that film will remain available for hobbyists and professionals using alternative processes for many decades. There is clearly a market for it and producers will fill the niche. The German economist, Walther G. Hoffmann studied British industry from 1700-1950 in a now classic study. He found that when new technologies displace earlier ones, very often the older technology lives on (particularly those with dispersed and varied markets), and in fact have extraordinary long lives. He illustrated this with the long-tail phenomenon, whereby the bell curve of product sales has the typical bell shape on the left side, but an extremely long tail on the right, representing enduring, albeit low-level production. Among examples he used were the endurance of the cut-nail along side sales of the far more common wire nail. Of course, this is not an absolute phenomenon, as products sometimes become impossible to produce (e.g. whale oil) but it holds true with astonishing frequency.
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