One interesting way to look at it is - every person who buys one console is one less reason when you come to choose your that you will buy the other.
Like it or not, we are all influenced by what other people/friends are buying and the reviews we read. If all our friends are buying the xbox then its a pretty good chance that we will go in that direction. This seemed to be the case last generation but this one its been turned on its head and with Sony capturing nearly 60% of the market its hard to see people switching back. Its a snowball effect.







