Yeah, we are :
PSX : 104,25 M
PS2 : 157,68 M
PS3 : 86,90 M
PS4 : 92 M a month ago...
Total : 440,83 M, a month ago.
This is called Playstation Empire.
To put things more in perspective, not counting the last consoles from Nintendo and Sony (Switch and PS4):
PS1+PS2+PS3 (348M) > NES+SNES+N64+GC+Wii+WiiU (281M).
And when PS4 and Switch finish to sell, the difference will be up to around 40-50M more in favor to Sony.
Home consoles territory has always been Playstation domination, and have never been any reason to think otherwise.