It does seem that that our analog copper landlines are at risk.
Save Landlines! – Defending Our Analog Copper Landline Network
Comcast offers VOIP. Not traditional phone service.
In a hurricane where power and cell phones go out, or when your internet service drops out(which still happens occasionally) , VOIP doesn't work.
Why is your landline phone dead?
They also favor VoIP for regulatory reasons. In 2012, the state lost authority over VoIP, so the California Public Regulatory Commission can’t require backup power. Companies only offer it voluntarily. And there’s no obligation to guarantee universal access and fair prices to consumers, according to the nonprofits Electronic Frontier Foundation and The Utility Reform Network.