Would the consumer be responsible for paying for: -DDOS (not only can you knock them offline, you can cost them big money) -Spam (Both received and botnet sent) -Retransmissions for traffic the ISP dropped due to congestion -Ads (adblockers could reduce bandwidth costs by a third)
I personally would love volume pricing. But I also would not want to provide tech support next time my parents get hit by malware and get hit with a $1000 isp bill.
It's the incentive that's lacking at the moment. My machine may send out bursts of spam at 3am, or a website ad may weigh 10MB, but as long as I can still check Facebook what do I care? But I would care if I were billed for those transfers. I'd start shopping for devices that helped me self-throttle. I'd start caring whether websites were bloated. That would pass the incentive on to those providers, etc.