Most full-timers are afraid of showing their bosses that they find help at StackOverflow, because their managers expect them to be smart and know everything about the technologies they work with. Who would want to pay a full monthly salary to someone who constantly seeks help at StackOverflow, right? This is not the case with freelancers, on the other hand. Those who are paid by result are not required to be smart. They need to be productive and effective contributors. Who do you want to be?
The video is here: https://youtu.be/_4pk5GNUySg