Are you ready to pay every website you visit, then? With actual money that you yourself own?
At best the ad revenue is taking money away from other web business models by instituting that kind of mentality that drives people away from donations and paid accounts.
Please, consider a paid account/membership when you read the guardian, the intercept, or look for the donation page of quality content articles in wikipedia or any of the loads of blogs written by authors with patreon accounts.
Estimate how many websites you visit each month; people would need dozens of monthly subscriptions if such a system was set up.
Instead, they will rather go to and pay google news, facebook press or apple information to get all their news content. Where would money be taken away then? Content publishers.