What Happened When Facebook Became Boomerbook
theatlantic.com
theatlantic.com
https://www.youtube.com/watch?v=oAatPPEaZDA
That is, a platform will start out young and cool, then the users get older, their parents join, their grandparents move in. Soon it's not.
Facebook beat one or two cycles of this by buying instagram and whatsapp. It's not a sustainable answer, and a near-death experience is always a few years away.
I question, however, the idea that the young demographic is desirable for advertisers. It's true that older people like to think they are young, but it seems the real ad bonanza is for medicare advantage plans, political advertising, expensive cars, and other things old people can afford.
As to your comment about the young demographic - I wonder about that too. The rationale I heard is that you want to target that demographic because parents and grandparents are spending money on the young generation today and then that generation will become the consumer of tomorrow. I don't know if I believe this theory though.
I knew this had to happen. Kids can't be using the same social network as their parents and g-parents.