Cloud Computing for Call Center Applications - The New ASP Model?

With moves by Amazon and Microsoft to provide companies cloud computing technology, I am wondering why there haven't been companies taking the next step to create application packages out of those clouds for the call center.

For example, here is a great list of reasons to have your IVR in the cloud from a hosted provider:

Why Consider The Cloud For IVR?
So why should you consider pushing your IVR applications out into the cloud? Talk to any provider of IVR hosting and several key themes emerge:

Scalability — With traditional IVR solutions, you have limitations related to the number of servers and lines you have in your facility. With IVR in the cloud, those are issues for your hosting provider. If necessary, you can scale massively to address seasonal concerns or other events. You can quickly add “lines” and capacity on demand. With some cloud-based providers, you may need to contact them to add capacity while in other cases that capacity may just automatically be added without you having to do a thing.

Deployment Speed — With cloud-based IVR, deploying IVR applications is no longer an issue of provisioning servers or adding lines to your telephony system. You simply upload your applications to your hosting provider, connect that application to inbound phone numbers or outbound calling —and start taking calls.
Ease Of Experimentation — Because of the deployment speed and the lack of need for equipment, it is extremely easy to “experiment” with new IVR applications. Want to try out a new call flow? A new application? It's easy to do. Want to see changes to your application happen in “real time”? Want to instantly deploy a prototype for people to try out? Again, the cloud makes all this easy.
Business Continuity/Disaster Recovery — With traditional IVR systems, what happens if you have some kind of natural disaster that impacts the office where the IVR servers are located? What if the proverbial backhoe slices through the network connection to that office? One of the strengths of cloud-based IVR is that providers typically have massively distributed and redundant networks that are specifically designed to always be there and to be able to survive these type of situations. With the right provider, you can be very sure that your IVR applications will be available to answer customer calls.

Cost Reduction — A key benefit of cloud-based IVR is, of course, reduced cost. With no equipment to purchase, there are basically no major up-front costs. By pushing the IVR applications out into a provider's network, the major IT costs are on the provider's end. You are really left with just usage costs.

Why just limit this to IVR? Why not have a full suite that covers all channels, like chat, Knowledgebase, email and CRM? It seems that there is a new opportunity for best of breed providers to team up with the cloud providers to create a new class of applications. Perhaps we will see new offerings coming out of some consolidations due to market conditions.