Yea, fuck property rights! If someone owns something in your eyeline, go ahead and vandalize the goddamn SHIT out of it.
The only laws that are absolute are natural laws. Everything else is a societal guideline that lays out consequences for certain actions/inactions/words/behavious; you do that, we will do this to you. Therefore, if you are perfectly willing to accept the consequences of your actions/inactions/words/behaviour then there is absolutely nothing that you cannot do.
That having been said, I like the cartoon.
I loathe advertising. I avoid it like the plague, and I've taught my children that the purpose of advertising is to create a want in you for something that you do not need and so it is to be treated with disdain. We are not consumers, we are citizens.
I don't begrudge the corporations though. I just choose not to indulge them and to stop lining the pockets of the inaccessibly wealthy by not sending them any more money than possible. I make everything I can by myself, and practice the 3 Rs (Reduce, Reuse, Recycle) with heavy emphasis on the first two.