Ok, I finally have time to reply from my PC, so let's put an end to this.
First of all, it's you who started this by making a statement that, I quote, "keep in mind that Google has indicated that they will start charging for those numbers next year."
I just accurately refuted that statement, which is incorrect. I don't need to answer any other questions. I don't want people here to be misled.
Also, you are completely misunderstanding what they did announce.
See this article from Google itself.
Google Voice Blog: Free calling in Gmail extended through 2011
It's titled "Free calling in Gmail extended through 2011".
What they did announce is that using google voice
through the gmail web interface will be free through 2011.
They haven't said a thing either way about free calling when using google voice through a traditional phone interface.
They very well might have some sort of revenue sharing agreement for termination fees and may be able to support the service in some fashion that way. They would make some sense as to why they would eliminate free calling via the internet.
When I make a google voice call from my Verizon Wireless phone using the app, Verizon Wireless is making an outbound call to some number (in the case of the call I just made, it's to 617-871-9263) to connect to the GV system. That number is serviced by Bandwidth.com. Verizon Wireless has to pay Bandwidth.com a fee to terminate that call. I pay for terminating the call as part of my Verizon Wireless bill. It's quite possible that Bandwidth.com is paying part of that fee back to google. Of course then google has to make an outbound call to connect you and they have a cost of that, but things might not be as negative as it might seem on the outside. Bandwidth.com charges probably somewhere between $.0075/min and $.009/min to the originating carrier to terminate that call and Google probably pays somewhere around $.008/min to make the outbound call. So, if google voice is getting a chunk of that terminating fee, they aren't doing as bad as it would seem.
Again, now you see why they might not want free calls via gmail. There's no originating call to get revenue back from.
If I haven't convinced you that you are wrong yet, I never will and I'm done replying.