Will A Price War Run VoIP Out of Business?

ElCheapo writes "News.com looks at the recent price war that has erupted amongst VoIP providers. How much lower can costs for unlimited long distance go before next-generation phone services run themselves out of business? How does this compare with free services that don't offer connectivity to the PSTN? Packet8 offers service for $19.99/month, a level analysts say is unsustainable. Vonage recently dropped their rates to $35/month to match VoicePulse. VoicePulse is known to use a softswitch based on the Asterisk open source PBX. Will open source allow startups to compete with the traditional LECs?"