What's wrong with Google trying to crowdsource its funding? Rather than show an ad to everyone for a fraction of a cent, maybe a fraction of users would be will

What's wrong with Google trying to crowdsource its funding? Rather than show an ad to everyone for a fraction of a cent, maybe a fraction of users would be willing to pay a cent for each search, on average? I'd pay 500 cents a month to cover the nearly 10 daily searches I perform, if it meant that no one's data was being gathered and mined.