MegaManX on 10 February 2015
As far as consoles, I think you need at least 15 million, don't forget that less hardware sold means no software sold. Some can argue as long as they are profitable, but no, it's not simply about making at least a dollar profit at the end of each generation, if the company isn't growing and gaining or maintaining marketshare it will be overshadowed by it's competition.
I think even 15 million may not be enough, and that goes for any console, if consoles have been gradually increasing each gen and like Nintendo you are losing sales each gen with the exception of the Wii, than their is a serious problem not only of consumer demand, but in the appeal of your software.
