What is the point of replacing 60gb with 80gb?

[Globox82]

Yojimbo said:
The 80GB version dont have EE chip, 60GB and 80GB probably cost the same to manufacture. They are driving down the cost of the ps3 they started with Europe now its US turn. Yeah the 80GB will probably go down to 499$ when 60GB is out of stock. They EE chip is for ps2 games instead of hardware they are going software.

B        But still why don't they do this? Once 60GB with EE chip is sold, make 60GB without EE chip and contionue selling it for 499$, instead they will (most likely) replace it with 80GB. Instead of trying to find a way to cut price on thier product they are making it all messed up and confusing.