1) The FCC is threatening all kinds of hell for service providers that don't implement shaken/stir. AFAIK all the major US carriers are already committed to implement it.
2) Robocalling is probably not net profitable for the carriers. Much of it originates from abroad and much of it is associated with other kinds of fraud. Never mind the secondary impacts due to users deciding not to get phone lines if they are just going to receive spam.
Comments
1) The FCC is threatening all kinds of hell for service providers that don't implement shaken/stir. AFAIK all the major US carriers are already committed to implement it.
2) Robocalling is probably not net profitable for the carriers. Much of it originates from abroad and much of it is associated with other kinds of fraud. Never mind the secondary impacts due to users deciding not to get phone lines if they are just going to receive spam.