No you owe the content publishers a living if you're consuming their content else they go out of business. Ads is how content publishers make money.
Advertisers in fact pay money for publishing their ads.
Show me the contract that states what you just did and I'll agree.
Following your argument above, if the content publishers don't like it they should stop publishing content rather than enforcing your particular idea of an implicit contract.
If not then your supposed liberalism is strongly biased against those who disprove of advertising.