Hmm, I don't see how anything is possible with "virtual infrastructure" that is not currently possible without it. Virtual machines and emulation are hardly a new idea, and even with virtual machinization it's not going to increase the ability of the hardware to multi-task.
Once the other companies release their own versions of the hypervisor, VMware's stock is going to plummet. I don't see any use for this at all outside of large server-side businesses and if anything it will bog down a system that uses more than 30% of it's resource at any given time.
You can see on their own site, on their own benchmarks, increased performance hits it's peak early, and begins to fall almost as rapidly not unlike multicore processors.
http://www.vmware.com/overview/perfo...enchmarks.html
I suppose if you run a VM you can run a secure "whatever" where ever fairly risk and worry free, but it seems pointless to me.