I don't think that this part of the claim can be justified- this seems to be too mechanical, and has an implicit premise (the program left the air, ergo something's the matter with format) that can not be generically justified.
No, but you could objectively say that The Price is Right is better than a show that isn't on the air, because TPIR still has a home and Scrabble and Sale of the Century don't. Or for GSN, there's a reason that we're still getting series of The Newlywed Game and Catch 21, but Russian Roulette and Whammy petered out.
There are nuances and things like how the cable series usually does 65 episodes at a time, but the better shows will squeeze out the ones that don't. The fact that Lingo lasted for six of those series counts for something.