It might be possible to get a "dry line". My parents ordered VoIP and then AT&T cancelled their traditional copper wire landline. The only problem was that they had DSL (which got automatically cancelled) through that landline, and without it they had no way to use their VoIP box. They were on the phone and an agent looked up the possibility of a "dry line" but then found out that they couldn't support it in their neighborhood. So they ended up ordering U-Verse from AT&T for their internet service. And it was weird too since they just patched the U-verse line into their existing phone wiring for convenience.
I think one of the issues is that a lot of these large phone companies don't want to support DSL any more. I don't even think it's possible to order it in my neighborhood, and existing connections are just for legacy subscribers.