[merpnderp]

I'm not sure libraries are a good counter example. They're less free than "free" internet, because they cost real money from the user in the form of taxes. If you asked someone if they'd rather have their library plastered with ads and get their $50/year back in county/city taxes that goes to the library, many/most would likely say yes.

[deogeo]

Let me add a sample to your made-up statistic: I would not.

I don't think selling everything we hold dear on the Market will lead to a good society. We could make a few bucks by covering churches, schools, and hospitals in ads too. Let no place be spared from the profit-maximizing Market.

It's also dangerous to assume that just because something has no immediate monetary cost (e.g. plastering ads everywhere), it has no eventual cost. The kid's section of the library (the most lucrative demographic!) will get plastered with ads pushing sugary drinks, snacks, and microtransaction-laden smartphone 'games'. What should be a place of relaxation and calm will get drowned with visual noise trying to convince you to spend money. Stress and poor diet contribute to health issues.