What's the problem with Game Freak nowadays?

[AngryLittleAlchemist]

mZuzek said:

Flilix said:

Pokémon has never been like AC or COD though. There are a lot of remakes and third versions in the franchise, which I assume take significantly less time to make (especially the 3rd versions). They have only made 7 main games, in 20 years time.

Eh, B2/W2 is its own game I'd say. 8 main games.

That's always made me curious - I feel like I've seen a lot of debate over whether B2/W2 are their own games, or rather more "ambiguity" than debate. 

What did it add and why does that seem to be not always acknowledged?