I think this idea of whether or not people are 'self serving' is rubbish tbh. The whole of human society (at least for the last 800 or so years) works on the basis of generalised reciprocity. We do things in the hope/expectation that sooner or later they will benefit us, our immediate family members or the wider community of people we feel we 'know'.
It is obviously to the good when the instrumentalism of someone with power and resources - like GM - coincides with a greater societal benefit, but you can hardly criticise her for being motivated in part by a generalised wish to improve things for herself and those she 'knows'.
The only act of altruism I can remember is that guy in the earliest days of the lottery who used the whole £26 million to fund a mosque in his home town. Even there, maybe there was some generalised expectation of a reciprocal spiritual benefit I'm not equipped to understand!