100 million PS4 lifetime is impossible...

[Manlytears]

surpass 100 million, sure, it will hit more than 100 million, but ( probably ) will not surpass PS2. why?

1º) there are lots of great options (PS4 - Wii U - X1 - PC ...) > In the era of "PS2" the other consoles did not offer any resistance, it was a struggle from one side, Ps2 beating others mercilessly (it is little wonder that Sony got cocky with the Ps3), that (probably) will not happen again ...

2º) Short gen. > Nintendo released their console one years earlier than others and microsoft already lost to Ps4, you know what that means? Small generation for Ps4! I have no doubt, Nintendo will release a new console in the next 3-4 years ( 5-6 years of WiiU as the strongest in Nintendo, no more than this) and microsoft will do the same they did with the "original xbox" (Microsoft will realize that lost to Sony and will release a new generation with speed to disrupt the domain of "Ps4" and try to conquer the market of sony, worked very well with the X360 and will likely be her plan, expect a new Xbox in 4 years, maybe even 3! This will force Sony to act, they never give one years of leadership to microsoft after Ps3!) ( X1 will have 5 years as the strongest MS console, maybe even 4 years)

3º)Mobile market and other things> unfortunately, many people are putting aside consoles and buying mobiles and tablets or just going free to play, like League of Legends. Hardcore game still buy consoles, the "standard players" too, but ... those casual ... they are increasingly moving away ...