Jervis-
I'd have to say that the cultivated ones are not in the perfect environment like those in situ. And I believe it does make a difference regarding light, water, air movement, nutrients etc and being in situ, they grow where the conditions are most favorable for survival.

Those anemic looking paphs just haven't been given the best culture for their species to thrive.

For me, I give my house environment to be suited to orchids now. I can adapt easier than they can.