A few parents have always tried to use their kids as a means for more than attention (fame, money, power). Now that advertisers see the influence that a few parents have, they are rabid with dollars.
On the far left side of the power law curve of that, we have:
“Online and Making Thousands, at Age 4: Meet the Kidfluencers“
https://www.nytimes.com/2019/03/01/business/media/social-med...