Then phone spam would be replaced by fraud, similar to what already happens with premium number fraud: https://www.twilio.com/learn/voice-and-video/toll-fraud
A bot tricks a voice service to call them, then rakes in fees.
A bot tricks a voice service to call them, then rakes in fees.
If actually a problem, having the charge go to charity rather than the recipient would eliminate any monetary incentive. I suppose one is left with someone who has a grudge against AWS trying to bankrupt them 25 cents at a time...