globalisateur on 09 March 2018
Probably the PS3, it costs them billions. Then the Vita memory cards.
But in the end their bad decisions on PS3 lead them to focus on great exclusives (and tons of work on game engines in order to make better looking games) and the creation of the PS4, being developer friendly and also greatly benefited of their past experience on game engines.
They still haven't recovered from their Vita mistakes though.
