When I grew up in Germany, infrastructure was good and people obeyed traffic signs etc, when I lived in London it was every man for himself, as abiding by the rules was often more dangerous than not, and sometimes not even possible.
Have you thought of why this is so common? A bicycle uses human power, stopping is a much bigger hassle than sitting lazily in a car. And a bicycle approaches a stop sign much slower than a car, this having a better overview before crossing.
In fact, it's somewhat telling that most bicycle fatalities don't involve a cyclist doing something stupid: most cyclist law-breaking is done when the cyclist believes it's safe to do so, and they're usually very attentive and aware of their surroundings for the duration. It's when the cyclist is in a normal state, and has no reason to expect a surprise attack-by-car, that the fatalities happen.
(As a pedestrian, I very much sympathize with this. I tend to jaywalk quite often when walking, and when I do, I'm super attentive and ensure it's safe before crossing. It's probably more likely that I'd get hit by a car when I have the right of way than when jaywalking. But I'm still breaking the law, as is the cyclist when he/she runs a stop sign.)