Unless it is deliberately or accidentally altered, an emulation will possess all of the evolved traits of human brains. These include powerful mechanisms to prevent an altruistic absurdity such as donating one's labor to an employer. (Pure altruism -- an act that benefits another at the expense of one's genetic interests -- is strongly selected against.) There are some varieties of altruism that survive: kin selection (e.g., rescuing a drowning nephew), status display (making a large donation to a hospital), and reciprocal aid (helping a neighbor in hopes they'll help you when aid is needed), but pure altruism (suicide bombing is a hideous example) is quite rare and self-limiting. That would be true even within an artificial Darwinian environment. Therefore, we have a limiting factor on what to expect in a world with brain emulations. Also, I must note, we have a limiting factor on TedHowardNZ's description of evolution above. Evo does not often climb down from a fitness peak (thus we are stuck with a blind spot in our eyes), and certainly not when the behaviors entailed reduce fitness. Only a changing environment can change the calculus of fitness in ways that allow prosocial behaviors to flourish w/o a net cost to fitness. But even a radically changed environment could not force pure altruism to exist in a Darwinian system.