It's not that Google doesn't know what to show you, it's that no advertiser outbids the scam ad for your 30 seconds of attention. To put it another way, you ha

It's not that Google doesn't know what to show you, it's that no advertiser outbids the scam ad for your 30 seconds of attention. To put it another way, you have next to no value, and it's only by the goodwill of Google that they even let you on the platform.