So if its main selling point is being ubiquitous, why the fuck wouldn't they force everyone to the same platform?
I have the opposite question: if its main selling point is being ubiquitous, why the fuck wouldn't they want to maximize the number of ways users can access it so that it stays, you know, ubiquitous?
Yup, because they're idiots and it's moves like this that will allow an upstart to steal all the market.
how often do you want to chat with someone you wouldn't give your phone number to though? if they can call you via messenger anyway, where is the win in them not having your phone number?
It is much easier to block someone on messenger than go through the carrier to get them to block a number.