I see the same thing at the shows I visit. Its rare to see decent quality bodywork anymore. I think part of it is that what's coming out of the auto manufacturers is so pathetic, that all people do is try to make their car look better than a new car, which isn't hard.
When you do see top-notch bodywork, in my experience, its on oddball cars - cars where the owner has a personal interest in making it perfect and maybe has more time than money - and not necessarily on the show winners, most expensive, or most desireable vehicles.
I think another thing is education. I came from a family of gearheads who did their own painting for years. From an early age, I was taught what to look for. If you can't see the flaws, you can't fix them. I think most people just haven't been trained to see what quality work looks like.