PS3 at $599 US dollars. Made it inaccessible for many, including me, for quite a while.

I'd also say the 2010 hack thing.

PS3.

But their mistake is what made them better today.

not putting articulated screen on their A7iii...

maybe we will see it on A7siii

The Cell processor. Over all it didn't add much of an advantage over a year older 360 and made ports tricky even today with backward compatibility. If the PS3 was essentially a 360 inside and launched closer in date and price they would likely have been far more competitive early on and made a profit on a system.

Controversial one is not putting online play behind a paywall from day one. Stinks for gamers, but PS+ has been huge for the stability and growth of their gaming division.

PS3, i'd say. They gave up so much ground cause they got cocky. They've regained a lot of it back but that is a giant fuck up that cost them immensely.

Biggest recent mistake is not releasing Gran Turismo 6 as a launch title along side the PS3 version. The PS4 hardware total would be a 3-4 million units higher.

My take is that biggest mistake was the strategy late 90's and early 2000's when the CBS content creation side started to push for DMR which led to Sony trying to push proprietary formats, hence Sony missed out mp3 players totally, and later led to BD DRM issues and the Memory stick for Vita, which essentially limited the expansion of Vita as platform.

Fortunately they changed a lot towards openness under Kaz

VITA, which seemed like it only existed to screw with Nintendo. Not that it managed to do that.

Just because you cut off the rest of my post doesn't mean it goes away.

Did you not read the "they should have invested in existing multimedia IP or developed their own using their assets in film and anime production" part?  Did you not read the part where I said they had nothing to appeal to kids?

How many of those games you listed had popular installments on the Vita, which was the very point of my post?

Cell was a lot stronger than PPC on X360, problem was the weaker graphic card...

And PS+ even if you put as controversial, when it was just games gifted on subscription had only about 2M subs, now that it's necessary for MP have it around 30-35M... and at least it only blocked MP gaming instead of all internet usage as done in X360.