I think, unless something very drastic should change, that we'll continue to see the numbers of Canons and Nikons above all other available brands for some time. Still, I don't believe this forebodes the demise of Pentax or any other "lesser used" brand in the near term.
I guess I find these type of threads somewhat confusing. Do they pop up because some feel the need to feel validated in their choice of brands? Or does using a more "unique" brand like Pentax lend a certain cachet to one's image? Perhaps the lack of observed Pentax users really does create a fear that the brand will disappear by the end of the year? As I said, it leaves me confused as to why this so often comes up. I know that as humans, many adore status, want acceptance, love to be viewed as better and unique ... But as cool as our cameras are,
however nice they may be, they are just tools used to accomplish a goal: namely creating photographic images.
It's the images that matter; our Pentaxes (or whatever else one ends up using) are just a means to an end. Or so it is with myself, anyway.
YMMV of course; and very likely does based on how often topics like this come up