Not at all if one uses the word "greed" as intended by the theorists of the social contract. "Greed is the gathering and keeping of wealth." You should've ended the sentence there to make the statement correct. It leaves open what you do with that wealth after it has been gathered. One may be charitable or not, but that decision is made after greed (self-interest) led the person to his wealth.
As you may already understand I couldn’t give a flying whatever about the theorists of the Social Contract :)
Cheers
Mel