Now, I suppose someone may have said this, but each game (except I think the 2nd generation which just added to the first generation) has a specific list of Pokemon that are "native" to that generation, which is usually about 200 Pokemon, which is still fairly comparable to the original 150. The focus of the game, in order to "catch them all" is to fill the Regional Pokedex; usually they don't give you the entire "National" Pokedex until you've essentially beaten the game.
I don't think that it's really fair to say that Pokemon is encouraging you to collect all 600 every time, and to count that as a flaw against the game. Yes, it -allows- you to import Pokemon from older games. I think there'd be much annoyance if they didn't let you move Pokemon into newer games; certainly people would complain about that. And, yes, they keep track of what Pokemon you have from other games, but people would also complain if the games didn't keep track.
Besides, while, yes, there are some people who spend thousands of hours trying to collect every single pokemon from all the games, because they can technically do it, you could make the same argument about games that have internet high score tables that cause people to waste hundreds of hours on a single little flash game, just so they can have the high score.
I don't think that it's really fair to say that Pokemon is encouraging you to collect all 600 every time, and to count that as a flaw against the game. Yes, it -allows- you to import Pokemon from older games. I think there'd be much annoyance if they didn't let you move Pokemon into newer games; certainly people would complain about that. And, yes, they keep track of what Pokemon you have from other games, but people would also complain if the games didn't keep track.
Besides, while, yes, there are some people who spend thousands of hours trying to collect every single pokemon from all the games, because they can technically do it, you could make the same argument about games that have internet high score tables that cause people to waste hundreds of hours on a single little flash game, just so they can have the high score.