I'm referencing issues regarding regulation - Facebook has already been approved (along with Google, if I remember correctly) to operate within the technical framework of a bank in the UK, I believe. Also M (the AI layer inside of Messenger is/has been canceled for the meantime).
They don't need to launch a token to get a cut of tokenized transactions, they already have the infrastructure to add the layer but perhaps would be savvy to shy away from the politics of initiating their own.