Yeah, but you miss the point. They don't care if they don't get a single viewer or not, it's just much MUCH cheaper than hiring union staff and celebrities (minus hosts). They don't have to pay contestants squat. It's sweatshop programming.
Now for someone who's jumped the Shark and back numerous times,
Scooby-Doo
Now, Scooby-Doo is an amazing story of television animation. The show virtually has been on since 1969, the only lull being in the 90's where the franchise subsided in reruns and direct to video movies. And the amazing part is, for most of the run, it used the exact same, militantly formulaic story elements. There were cases where they tinkered with the concept (The New Scooby-Doo Movies, when they added Scrappy at first to combat low ratings, and A Pup named Scooby-Doo to name a couple), but not the formula.
However, such a formulaic television show needs to remain fresh... so they changed the whole series on occasion ONLY to switch back to the original format when it wasn't quite successful or good.
First off was Scooby's All Star Laff-a-lympics which was technically a programming block that included the Laff-a-lympics... Scooby was there, but in a cast of many, and the only one from Scooby-Doo in the series (you won't believe the underhandedness they have in advertising the new 13 episode set, splashing the rest of the crew on there because of a cartoon special they added on).
Then, while Scrappy was a ratings stunt, the show didn't change initially (still were going after imaginary ghosts), they changed the format to the New Scooby and Scrappy show, featuring the WORST cartoons of the franchise... the ones where Shaggy and Scooby run away from some big giant guy. To say nothing of Yabba-Doo.
This was followed by 13 Ghosts of Scooby-Doo, which wasn't so much bad as misguided, and Scrappy actually has some genuinely funny moments (mainly because Flim Flam surpasses him in annoyingness and makes him seem milder as a character... plus Scrappy only said "Puppy Power" like once or twice). The show has some genuine moments of really funny, weird fourth wall destroying stuff... though I have trouble with an episode featuring an obvious parody of Ed Grimley with a voice actor who clearly never heard of the character, making the wrong and annoying infliction in his catchphrase, pronouncing it "I MUST say" (rather than Martin Short's "I must say!" I'm a huge Grimley fan). But there's great comedic acting from Vincent Price. The only reason to watch the series. Oh, and they caught 11 Ghosts. Only 11. The last in a pretty anti-climactic ending episode.
And last, Shaggy and Scooby-Doo get a Clue. it's not as bad as everyone says it is, but only because the villain is so over the top. Not quite Doofenschmirtz over the top, but hammy enough to make this entire generic series (you could put ANYONE in Shaggy and Scooby's roles) tolerable. Especially the big reveal in the last episode.