Well of course it is! This is such an obvious observation that it is really not even worth being called an observation. Clearly, if no other products of a particular type are made (because it is usurped by something else or whatever) then we can assume that what's left was the best it could have been (which may not even be logically correct).
The real valuable thing Ben, is not recognizing you are the last after the fact but recognizing this before. That way one doesn't produce the last of anything but the first of the new thing.