The number one beneficiary in this space is the platforms. There's no halfway about it. These are massive companies, making billions in revenue, specifically in the advertising from child content and the advertising to children. The fact that there is no control over this is a giant mistake. The fact that we've been asking them to police themselves is a massive mistake, and it is not in anybody's best interest to do so.
Beyond that, the primary beneficiary financially is the parents. If you are under the age of 12, you cannot have a YouTube account and you cannot have a TikTok account. Your point about age verification is taken. However, if you want to get paid from those things, you certainly can't get paid through PayPal or the other mechanisms at that age. The kids, then, are employees of their parents, and anything that's happening to them as a result of that is because their parents are putting them in that position to be their employees. The protections ultimately should fall on the parents or, as a proxy, on us as a society.