Money = Nintendo
Agreed, lets remember that Nintendo is in fact a corporation, and now they have a seperate Pokemon Company, they will never cease at creating pokemon games until the preverbial well runs dry, and that won't happen in a while. As for the 5th Gen, its quite possiable, I mean we were shown in Gen III how much Nintendo likes to beat a generation of Pokemon into our minds. With the arrival of Pokemon games onto the Consoles, as well as spin-off series such as Mystery Dungun, and Ranger, it might be awhile before we see the next gen, but it will happen. Nintendo has to complete the remakes of Gold and Silver to start off with, but after those are finished, they might make a few spin-off games, and mabey a Console game, but after that, say hello to Gen V, oh it'll happen. On the topic of "Original Pokemon", the fact that a majority the animals on this planet have yet to be classified, and that pokemon only has had 493 chances to get each species, I doubt that the Gen 5 Pokemon will be a let down. Now how there going to work around the whole Arceus Original One thing, makes me wonder on what the 5th Gen Legendaries will be, but never fear, pokemon will not begin to repeat, or reuse pokemon, often. (Just remembered the Pikachu, Plusle, and Minun simularites:D)