Quite honestly, I think that Cisco and Verizon (companies I respect greatly, don't get me wrong) are really pushing the envelope in calling VoIP, instant messaging, and high-definition video meetings "advanced collaboration tools." These are commodity technologies that exist all over the country.
The study should really include a look at truly advanced collaboration technologies, a.k.a., 3-D immersive collaborative worlds. Tools like ProtoSphere have to be considered in this discussion, especially considering that it integrates all of these "advanced functions" into a single, engaging interface.
I have an admitted bias because my company provides this technology, but I'm not the only talking about the power and benefits 3-D immersive worlds can provide. We're doing our own research that shows real business metrics and results from using 3-D immersive environments. The early adopters have not been small players either, but rather, large enterprises in entrenched industries like pharma and energy.