Most of all - ZERO INNOVATION!
(Not necessarily find some crazy new solution to a problem -- that's called research)
Yes, making money is not innovation. Innovative things are usually financially successful, however.
You could make a case that this is entirely due to the fact that they ran out of companies to copy, but that's beside the point. Nowadays, it's just inaccurate to claim that Zynga doesn't innovate.
I'm a gamer. I work at game development studio, and I spam my buddies that play the same game as me with my status, but no one else...