I block all ads and have for the better part of a decade. Too many worries about malware, improper handling of info, tracking, you name it. It's a bad business model, anyway. I not met too many true geeks who feel much differently. If someone's business is built on something that can be manipulated and blocked so easily, the business model sucks to be sure.
Companies do not blow millions on advertising because they think there's an equal number of millions coming in from actual sales revenue.
The business model exists as a business expense and therefore exists to reduce the companies tax liability.
Let's put in this way. How many people do you know that have actually bought something from an online ad?
Yeah, I can't think of anyone either. Ever.
Now take a look at the advantage they get from writing millions off running pointless Superbowl ads.
From their perspective, the business "model" is working perfectly because of corporate welfare. Get rid of that shit, and we would likely see a 90% drop in advertising.