I've wondered this same thing. Were they always the same, but with more effort (as a ratio) towards PR and image, or did the Ruth Porat era signify a cultural shift? Maybe the influx of "tech as a high paying job" type people versus "tech as an inherent interest/tech to solve problems" crowd?

It's easier to not be evil when you're small.

I saw someone here put it in the context of a life cycle, and that rhymes with reality to me.