Poor people pay more for ads (as part of product price), and suffer more because of ads (from misleading advertising for shit products like junk food and drugs, to having certain out of reach lifestyles based on purchasing crap they don't need hammered on them and getting in debt). They also pay with having a worse media landscape, worse social media, and many more (not to mention the influece big companies with big spending budgets get).
People would also be better of without 90% of the ad-driven internet.