Business Insider traveled to Cannes, France for the annual gathering of the world's leading marketers and agencies. We caught up with several and asked the so-called Google-Facebook 'duopoly,' whether they are worried, and what if anything the industry needs to do about it.
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Heard in Cannes: World's leading marketing execs told us how they feel about the power of Google and Facebook
Some are more worried than others.
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The answers were revealing.
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