Probably it depends on type of clients you are working with, but from my freelance experience - to earn solo from freelance really good money - you should work very hard, if you earn at least 2k+ on stocks it is ok to spend 1-2 weeks for freelance, just for additional cash. But possibility to earn here much more than from freelance - is higher. But you might be lucky to meet your “golden cow” type of client, who knows))
p.s. as for TV show - it is most probably was made by that channel TV production team, like one guy who got the task to create some background action/titles and he sits there and just gets his salary, but not millions for sure.