Advertising as Street Art?

Why is it that when a street artist creates art on the street it is criminal but when an advertiser does it, it is acceptable and even legal. Take the recent ad campaign from Mini Amsterdam.

Just after Christmas, the company created "trash piles" on Amsterdam streets of used ribbons, crumpled wrapping paper, and large cardboard boxes that appeared to be Mini Cooper packaging. As you can see in the video below, the boxes were definitely attention-grabbers....and street blocking garbage.