Likely same reason as for the Apple Store's policies. The market of family- and children-friendly content is huge, so these platforms do not want to have any da

Likely same reason as for the Apple Store's policies. The market of family- and children-friendly content is huge, so these platforms do not want to have any dark stuff associated to them. Either way, that also leaves a hole, that is, an opportunity for other services. The possibility to target ads to the the very specific taste of single individuals is very recent and, I would argue, not fully mastered yet.