I would suggest an alternative to Craig's theory. I think the artisan designers, as well as the larger manufacturers, consumed themselves with chasing a handful of potential customers of cutting edge trick kites, and turned their backs on the larger number of people that just wanted something fun, and easy to fly well. We forgot about the casual flyer that will pay for a good, well-made kite. We forgot about the people that aren't into spending days on end flying by themselves, but saw kite flying as relaxing, and maybe something to do with friends and family. We forgot about the people that built kiting into what it was "back in the day".
There are still a few "boutique" makers ( I really dislike that term

) out there. You've just got to look a little harder to see them.

(Hi Craig!)