Ban robocalls, though, and just pay real humans to make those calls instead of overpaying superintendents.
As we know, a weakness in all free-entry point systems (like email) is freeloading. The somewhat broken "solution" is charging a small fixed fee to the initiator. But this doesn't work in systems we would like to keep at zero cost because it's a blanket response to an acute problem - most coms are welcome and legitimate.
Giving the callee the power to charge the caller a small "handling charge" if they don't like being bothered makes a lot of sense.
Of course it has its own modes of abuse, but the best way to avoid that is not to send to people you don't know.
It would also be nice if they streamlined the ability to add yourself to the DNC list.
Google engineers that are here, is there a reason you don't do this? If not, can you do it in your 20% time? 350 million of us will thank you.
You used to be able to collect direct from spammers if you could hunt them down, too. I think CAN SPAM ended that, which is a shame.
I would go as far to say unsolicited business calls, automated or otherwise, should be banned.