"I do not see it as a problem [for Facebook] as long as those younger users are going to Instagram," he said. "Facebook, the company, needs to do what it has been doing, which is to invest in the next big teen thing. I believe as those teens get older, go to college and have a family, they will come back."
According to Moorhead, as people get older, they'll give up their Instagram and Snapchat accounts and move to Facebook, no longer bothered that they'd be joining a social network where they'll friend their parents and grandparents.
Kerravala, however, isn't so sure that will really happen.
"People have either thought, 'Hey, I want to use Facebook' and are using it -- or they think Facebook is stupid and won't ever use it," he said. "Facebook needs to stop trying to chase what's already there and build something unique that teens don't already have."
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