It also could be that I have made it a concerted effort to never see any online advertisements on my network.
Well ya. This is like saying you don't get why guns are dangerous and then mentioning how you have bullet proof windows.
The whole scheme breaks apart if you block the constant images trying to make you buy things. I see it affecting others, no one in their right mind would buy a 100k car if it wasn't for ads imo.
People ready to start a shooting aren't as approachable as you make it seem. Complicated solution but I don't think your solution would work most times.