You are generalizing too much here. I know many who have tried out a product only after seeing its ad. Ads can give plenty of returns to brands. But targeted ads which even exploits our most intimate conversations are really bad news for our right to privacy.
Israel has already taken over and profits from Palestine’s oil and gas reserves
https://www.aljazeera.com/opinions/2021/6/21/palestines-forgotten-oil-and-gas-resources
https://unctad.org/news/unrealized-potential-palestinian-oil-and-gas-reserves