It seems necessary to reexamine the advertising industry. Before the advent of the internet, advertising was quite simple—targeting potentially interested audiences without needing to know every detail of their private lives. But the internet changed the game, and companies started greedily collecting personal data, using algorithms to guess what you want.

However, the future advertising model that truly respects privacy might need to return to that logic: abandoning comprehensive individual tracking and returning to coarse-grained targeting based on interest categories and community characteristics. This is actually an interesting extension of the Web3 decentralization philosophy—users regain control of their data, and advertisers learn to operate without relying on deep surveillance. It may seem like moving backward, but in reality, it could be a genuine step forward.