Unless, as Samuel seems to be saying, deception was possibly involved.
Kodak have discontinued countless stocks over the years, without nefarious motives. Would they have done it to Kodachrome in its heyday? Probably not, but by 2010, sales of Kodachrome had dropped considerably, and there was only one lab left that could process it. Kodak had shifted its core business away from film, and Kodachrome was probably regarded as another non profitable product line that could be cut. Remember, they filed Chapter 11 just a year later. I think Kodachrome was just a victim of digital cameras, and corporate upheaval at Kodak.