From what I have read, the Duggars are ALI members who believe that adulthood begins at the time a child enters into a parent-approved marriage, and at no time before that. No exceptions. Until a child enters such a marriage, he or she is expected to reside in the father's house and assist him in any way he needs them to. Normal dating is not permitted, and is perceived as a barrier to marital happiness.
College or career prep is not only a non-priority, it is the antithesis of what these parents expect for their children. I see these kids as captives. The girls, in particular, are in "helpmeet" training from infancy. It's a kind of indoctrinated slavery.
The Gosselin kids act out. If they were Duggars, their punishment would be swift and sure. I agree, the Gosselin kids will be able to escape. The Duggars, not so much.
ETA: I apologize if I've taken this thread off topic. Maybe it should be on the Duggars thread.