AT&T is asking California regulators to be relieved of its obligation to provide basic landline phone service to anyone who wants it. “No customer will be left without voice or 911 service,” AT&T says, but Californians weighing in are, by and large, skeptical. Regina Costa, telecom policy director at the Utility Reform Network, an advocacy group, told Marketplace’s Lily Jamali that having a “carrier of last resort” matters.