I agree but perhaps Zuck's freebee is one of the reasons they spring for the paid data plan? They see what "might be" and also I imagine that many of those sites aren't relevant to them and they want something local. If they're still using the data plan in a year, then it could be called successful. I guess it will come down to how much the local Telco's gouge the customers.
It is a pity in many ways that the Internet has become so commercial and such a cess-pit of scam artists and miscreants. I really feel sorry for anyone coming in cold to it.