It's not just Google, its Skype "phone number to go", and all the other Voip services that offer access via pots service or a voip connection on a "smart device". The technology has exclipsed legacy providers. New business models are needed to be viable in the future. Flat rate pricing is already starting to show up in the market place such as Tracfone, Boost and others. Consumers will help drive the services wireless carriers provide.
