This is obviously about silencing the entry points and advert channels for this kind of business. If people were posting this on a public forum like Google Plu

This is obviously about silencing the entry points and advert channels for this kind of business. If people were posting this on a public forum like Google Plus or something it would be a fair comparison. But Gmail hosting private accounts isn't quite the same. And if there were a large infrastructure to use something like Gmail to traffic children then, yes, I would expect them to comply with the law to crack down on that behavior or face legal action.