maybe they could compare my purchase history from various services along with the ads they've served, and at some point realize that I've never bought anything

maybe they could compare my purchase history from various services along with the ads they've served, and at some point realize that I've never bought anything from an ad, nor ever bought anything, ever, that's been promoted through these ads, then finally stop showing them to me. It would be better experience for me, and also make their clickrate ratios go up for their advertisers.