[Tongue somewhat in cheek] Canon engineers, at the request of Canon Marketing, are designing in some reasons for buyers to upgrade to more expensive body designs
Actually, a tongue is not needed in cheek when speaking truth.
I have noticed that many different businesses in sectors related to and not related to photography suffer from the same disease: marketingitis. The marketing departments of many business now tell the programmers, engineers, product designers, etc. what to do.
I hear ya'. But 'come on, you didn't really expect the designers and engineers to actually put a ream of paper in the printer and test it before going to market, did you? Sheesh! (wink, wink)