Unfortunately, what you just said about the old lady being mugged, the sad fact is yes, people will. The majority of human beings are hardly altruistic at all. There are several OTT examples, i could state if you want. Its the sad state of humanity, thats its "I" not "Us", at least in general terms.
The majority of people will be altruistic to their friends and family, as long as they percieve that it will not endanger them to a high degree. Yet will not be altruistic to a stranger they meet simply because they have no empathy with that person.
Check around the net for altruism-empthay psychological theories, there are a load of case studies on it...
Anyway, back on topic, same will go on about pirated software, most people will ignore it, because they dont see as it helping them, or will put them in "danger", i use the term danger because honestly i dont quite know what situations could arise, it would depend on the circumstances.