This is already the case for some carriers, Vodafone (when Passport is enabled) off the top of my head, and also Meteor. Has been the case for some time.
There has been an issue with data though, and I'm not sure the new proposal solves that. Also if you have a plan with minutes, they won't be included as minutes while abroad, you'll be charged, but at a standard home rate.
There has been an issue with data though, and I'm not sure the new proposal solves that. Also if you have a plan with minutes, they won't be included as minutes while abroad, you'll be charged, but at a standard home rate.