Sony right to not put a second stick on new PSP

[only777]

I can understand why Sony dont put a second stick on the PSP, it would be a nightmare.
Im not sure if people fully understand the implications of putting a second stick on a revised PSP model.

1) PSP sales are now sitting at 46.70 million, you make a new model and then you have 46 million units that are not capable to take advantage of any twin stick feature in games.

2) Your a games studio, what do you do? Design your FPS around these new controls and make a product that you cant sell to the 46million install base? Do you make it round the old control system and anoy all the new adopters of the new model? Or do you do the other option and try to make the game able to use either control system and put the cost up of your development?

I think Sony are actually right to not put in a second stick because if they did it would just be a nightmare for everyone involved.