Because it is objectively the case that the "average user" of the internet has a google cookie in their browser. It doesn't require that they be logged in - though I believe it's likely also the case that the "average user" is indeed logged into a google account - it just requires that they use google search without turning off cookies or specifically blocking google's. Essentially everybody uses google search and essentially nobody cares enough (or would know how) to turn off cookies or block google's cookie.
If this doesn't describe most people you know, you're in a very small bubble. (I'm somewhat in that bubble too, but I still have lots of family and friends who use the internet the normal way.)
Because it is objectively the case that the "average user" of the internet has a google cookie in their browser. It doesn't require that they be logged in - though I believe it's likely also the case that the "average user" is indeed logged into a google account - it just requires that they use google search without turning off cookies or specifically blocking google's. Essentially everybody uses google search and essentially nobody cares enough (or would know how) to turn off cookies or block google's cookie.
If this doesn't describe most people you know, you're in a very small bubble. (I'm somewhat in that bubble too, but I still have lots of family and friends who use the internet the normal way.)
Google has billions of user accounts ....