Oh obviously it's more effective, but as we're seeing, that efficiency requires a tradeoff that many people are not willing to make. And in the long run, it's not more effective if it drives everyone to ad blockers and privacy-oriented operating systems. It's like saying dictatorships are more effective than democracies, which is true until people decide they want to get rid of the dictator. My point was that this doesn't have to be a choice between ultra-targeted Facebook ads and non-targeted billboards. We can imagine a compromise with semi-targeted ads that most consumers can tolerate and most marketers can live with, but it just isn't viable if Facebook maintains its dominance.

The solution I'm suggesting is to either break up Facebook or legislate away their business model. I know that would make your life as a business owner more difficult, but wouldn't you also feel a little bit better knowing your business couldn't be wiped out by a broken algorithm disabling your ad account?