Companies often place adverts illegallly [0] by recruiting precarious workers who are going to face the police, not them. They'll even go as far as to cover a cycling area with a slippery material for their ads [1], or to cover historical monuments in spite of architectural regulations [2]. A multinational like Amazon will even steal a wall reserved for artists and pay goons to intimidate the population [3] in order to promote its shitty services.
Also, i don't know about the current situation in regards to this, but more than a decade ago there was a "scandal" in which public French companies wanted to setup spy cameras in advertisement panels so they could target ads and study reactions. The tiny pinkertons following you around is, unfortunately and scaringly real: https://antipub.org/ecrans-de-pub-espions-du-metro-les-assoc...
Last time i was in a big city i had the occasion to see an advertisement panel graphed with a huge red "Adblock". It was heartwarming, and reminded me that pretty much every where local people organize to sabotage advertisement panels and companies, and you should do the same in your neighborhood! I'm personally lucky enough that there's no advertisement where i live, and i think nobody from the neighborhood would let such a trend emerge.
[0] https://lareleveetlapeste.fr/affichage-sauvage-quand-les-mul...
[1] https://www.bfmtv.com/societe/paris-burberry-recouvre-une-pi...
[2] https://www.latribunedelart.com/le-patrimoine-parisien-denat...
[3] https://www.streetpress.com/sujet/1600089407-paris-amazon-em...