Sprint Teams Up With Google Voice

Looks like an interesting new development, one which I'd use. However:

Neither service works for Sprint’s business customers...

And I pay for which increased level of service as a business customer? Dear Sprint: My current service agreement is up about the time the iPhone 5 (presumably) comes out. There are now two carriers with the iPhone. What are you going to do to keep this 10+ year customer on your network?

Wired: Sprint Teams Up With Google Voice