The Economics of Vonage v. Bell

I'm currently paying Bell Canada roughly $60 per month ($62 last month to be exact) for home telephone service which includes my local and long distance telephone service (all 911, local and long distance services), my internet service (1mb DSL plus terminating devices) and a few additional services like call waiting, touch-tone and caller-ID.

Vonage wants anywhere between $15 and $50 a month for unlimited telephone service which requires a DSL line to operate anyways.

These numbers don't add up in Vonage's favor. I wonder how successful Vonage can be in Canada?