rehess wrote:
Mechanically, Nikon and Pentax followed the same path, largely maintaining compatibility while slowly modifying their basic lens design. After twenty-some years they are ending up essentially at the same place Canon jumped to with their EF lenses. Good people can argue about which path is better, but I believe it is clear that Canon gained ground, and Pentax lost ground, during that time.
Your post implies that the change in market position is a direct result of the lens mount. Canon increased its market share by building a larger customer base than Nikon. They did it with new users that they brought into the arena by aggressive marketing Not by converting large numbers away from Nikon.