it would be easier imo to charge $1 for every 10 gb of bandwith used up. so it would be $10 for 100gb $20 for 200gb and so on. people who just use the net to email would be charged the least
Because those prices don't cater to the real reason behind caps and charging for bandwidth. Providers can dance around it all they want and throw up all the smoke screens they want ("network management" et al.) but quite simply, it all boils down to and is exclusively motivated by ::GREED:: moreso than anything else.
Your proposed prices don't sufficiently ::GOUGE:: the consumer in the manner the providers would like to.