The goal of an ad is mostly to make potential buyers aware of a specific product/brand. Hence, showing ads to potential buyers is most effective, even if many/m

The goal of an ad is mostly to make potential buyers aware of a specific product/brand. Hence, showing ads to potential buyers is most effective, even if many/most will not become actual buyers (like you, apparently). The conversion rate among the potential buyers (who can afford to pay for an ad-free service) is still much higher than among users who agree to see the ad (by not paying for an ad-free service), but cannot afford to buy the product.