This chart shows just how much Facebook, Google, and Amazon dominate the digital economy (FB, GOOG, AMZN)

 The chart below shows the amount of power that three of the biggest tech companies have in key sectors of the digital economy.
2 out of every 3 digital ad dollars in the US goes to Facebook, Google or Amazon, according to eMarketer data.
Tech companies have long argued that competition is just one click away in the internet market, but the concentration of power in certain markets is now under renewed scrutiny by regulators, politicians and the public. 
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