Here's the thing, as someone who sees themself both in ad tech & as a privacy advocate: Advertisers who seek personalized targeting will focus on platforms with the most personal data: Facebook & Google. But I don't believe the status quo of ad targeting is the only future of it.

The idea that advertisers will walk away from platforms that don't provide personalized targeting simply doesn't hold up. Advertisers buy posters and billboards and TV ads and lots of other things that don't promise the accuracy of web advertising...

Further, the promise of that accuracy has mostly been false. Year after year after year we see that ad products that promise perfect accuracy and tracking don't work, are giving false results, are proving entirely ineffective, or have unexpected negative brand impact...

Also, the one thing we've learned for sure about advertising on the web is that advertisers will try all sorts of things and look towards outcomes. This includes bad things that fail...

This includes things that don't work at all, but still end up costing millions of dollars.