Only for restructuring.
PS2, PSP and DS are low selling so yes, dropping them could maybe be a valid proposition. But if you're advocating platform exclusivity as the most profitable path for a publisher, why didn't you answer Ostepop by suggesting EA should become a Wii-only developer? Why are you including XB360 and PS3 in their projects, and not suggesting FIFA and Madden would make a load more money if they were platform exclusive?
This makes little sense to me. It costs on average $20 million to make a title for a platform. It cost...$1 million to port it. Thus for a game each on PS3 and XB360, a publisher would either have to spend $40 million for two exclusives, or $21 million for one title ported. What little I've seen of financials and publisher behaviour, that extra $1 million to port is generating a lot better ROI than putting it part-way towards a platform exclusive. Of course are there are cases where the effort isn't deemed worth it, so you won't see every title ported always and you'll be able to find examples of exclusivity, but that's far from the norm especially these days.
First of all, assuming porting costs are only 1 million dollars which I don't believe, whose only spending 21 million dollars for multi-target software that's selling 5 million units?
The biggest multi-platform titles are spending far more than 20 million dollars, for it to be worth, you have to. Lets be honest. Assassins Creed, Modern Warfare and Grand Theft Auto, isn't working for everybody. If you were to ask me if I thought Bioshock 2 was profitable, my answer would be a resounding no.
I used EA as an example of this: reducing the number of platforms it supports, being that they are already a multi-target developer and publisher. At the micro-level they will reduce the capital investment of multi-target software. It's inevitable.