Proof of personhood doesn't really help that much, when you can hire thousands of real people to click on things and generate fake content all day.
If doing online action X makes $0.01, there will always exist someone willing to have 10,000 people to sit there doing X 10,000 times a day or a week, generating $1M in revenue (check my math). Figure out what to pay those 10,000 people and the rest is profit.
If doing online action X makes $0.01, there will always exist someone willing to have 10,000 people to sit there doing X 10,000 times a day or a week, generating $1M in revenue (check my math). Figure out what to pay those 10,000 people and the rest is profit.