system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: When and why did all cereal makers stop giving away toys in their boxes?

Growing up in the UK, this was a standard in almost any cereal box, Kelloggs, Nestle or otherwise. Where have they all gone?
gpt
In 2007, new laws were introduced about how companies could advertise which products to children.

It meant that you could no longer, for example, try to persuade a kid to eat your unhealthy food.

I suspect putting toys in cereal would fall foul of that, and that's why cereal adverts are now aimed at parents, telling them their kids will be well-behaved, high achievers if they eat Coco Pops.