Originally posted by Adam Probably because Canon and Nikon started the trend of having no flash on their full frame flagships, since pros use proper lighting equipment to begin with. Pentax's K-3 II was the first APS-C flagship DSLR not to have a flash, AFAIK.
Yes but you have to keep cost at reasonnable level and we are in a shriking market... If the on board flash is not part of the decision for many people, not as much as wifi, gps or articulated screen, then it may really disappear.
The K3-II and K1 sales are good indicator for Pentax and it seems K70 and KS2 are prefered by many to K3 because of the wifi and articulated screen. Even through K3 overall higher end body with on board flash with wireless control, much better AF, more direct controls and much better build/expected life span.