For those questioning advertising dominance by facebook, they have been spanking google since 2013 
Look at the %total of market share
Facebook took 33.5 percent of mobile display spend in the US last year, with Google pulling in 10 percent of mobile display ad spend.
Most estimates peg Facebook as the runaway leader in display for the foreseeable future. How did Facebook get here, and does Google stand a chance of catching up?
http://marketingland.com/google-stand-chance-facebook-mobile-display-171579

Look at the %total of market share
Facebook took 33.5 percent of mobile display spend in the US last year, with Google pulling in 10 percent of mobile display ad spend.
Most estimates peg Facebook as the runaway leader in display for the foreseeable future. How did Facebook get here, and does Google stand a chance of catching up?
http://marketingland.com/google-stand-chance-facebook-mobile-display-171579

