Google can very well distinguish between a "domestic" IP or a "school" or "business ip". Those RIPE-lists are public. They know you're connecting from a home.

THANK YOU! Thanks to this thinking I can browse the web without being tracked (well, by commercial entities at least) with ease!

Imagine if the majority would use privacy-enhancing software, would use decentralized social media, would use the likes of ddg, sp or ixquick, then the advertising industry undoubtedly would take much more / even more elusive and harder-to-filter measurements to track and spy on people. Now, all I have to do is install Ghostery.

So please, do continue! Continue disregarding the effectiveness of statistics, so your surprisingly and ever increasingly accurate profile can be sold off to the highest bidder! Continue to being influenced by marketeers which try to manipulate you in ever more clever ways! Continue to think those companies make you such a great offer which will practically costs them money but will improver your life! The more people which think like you, the less marketeers will "need" me, the less they will try to know me, the less they bother me.