Let's see:
Porsche 2010 revenue $5.4 Billion.
Ferrari 2010 revenue $1.1 Billion.
Who would you rather be in bed with?
Perhaps when the small percentage of the bunch of whiny internet kids who're bummed that they can't drive a Porsche in a video game grow up and could actually afford to buy one, they'll turn round and buy something else instead, and when that starts to impact on Porsche revenue they'll do something about it.
In the meantime, they're content that sooner or later more or less everyone that harbours a teenage fantasy about owning a Ferrari, will one day wake up and realise that while they're beautiful, fast and exotic, they're really cripplingly expensive to buy and maintain, and they'll wind up buying a much more user-friendly, less expensive and easier to maintain Porsche. (And yes, I had a Testarossa and a Daytona Spider poster on my wall as a kid, but neither one are now resident in my garage.)
There's a reason that there aren't many 100,000 mile Ferraris out there, basically they're almost collectors items from day 1 because of their huge pricetags and low-volume and every mile that goes on them detracts from their value. That's not so enjoyable. There's also a reason that there are literally thousands of 911s with over 100,000 miles and still ticking like clockwork, and being enjoyed daily. Sure they're not going to make you a collector car profit like a Ferrari, but hell, at least you get to drive and enjoy it without having to belong to the upper echelons of the mega-rich.
I'm just waiting for the Porsche / VW merger to swing a little further (it only has to be 0.2%) in VW's favour, and then, since VW would have the majority stake in Porsche and VW isn't really exclusively licenced to anything, it could dictate where Porsche's are used!