This is my bear case for Google. Google offers the least precise targeting compared to Facebook and Amazon. Facebook knows more about its users because users tell it about themselves and Amazon knows more about purchasing habits of its users because of thier purchase and search history. If I’m searching for something with the intention on buying it, I am going to go to the specific site - like Priceline, hotels.com,…
I don't know. Google is still way ahead. > Google’s U.S. ad revenue is expected to rise $5 billion this year to $39.9 billion, while Facebook could rise $3 billion this year to $21 billion, according to eMarketer. Adwords is just so effective to find your customers. You won't beat `buy new headphones` type traffic on Amazon or Facebook.
Not that Amazon is a startup exactly, but they certainly act like one a lot of the time.