What if Nick can't make any good shows anymore and start to like lose almost all of their viewers? Would Nick be gone?
Good question. Nick has definately established itself as a powerful television network, raking in large revenues each year.
The secret Nickelodeon has is an evil one. Betray your viewers as they grow older. Always target the new generation audience. No matter what shit they play, kids will want to watch it, and as they grow up, it will become their Legends of the hidden temple, it will have meaning to them, and Nick will continue to get viewers.
The problem is, Legends was actually a good show, I don't see anything good coming from Nick anytime soon. When the final season of Avatar is completed, I doubt there will be anything at all from Nickelodeon worth watching.
That's terrible that kids that are watching this crap will be thinking that this is their Legends of the Hidden Temple when they don't even know about all of the good stuff they're missing.