Those countries have pruned-controlled immigration systems. What leads to sudden disruptions in observances of law are newcomers who are not familiar with how things work in the new culture. If someone were to walk into town where all the shops and stores keep their doors open and have a box on the counter for payment when someone feels like they need something, it would be a strange sight. And this person would wrestle with the idea of taking something and not paying in full with a bunch of pros and cons. Maybe after some time he will understand better how to proceed.