You wrote something interesting, unfortunately you accidentally hit the "reply" button before you could insert some URLs that would add some substance to your words.
I am sure you know that words without evidence are of no value on the internet and it will kill your reputation, so I am waiting until you get online again and send some examples.
Please post some currently working code for escaping XEN, KVM, also VMWare and Virtualbox may be of interest, thanks!
I could not find any relevant content on the website you publish in your profile - btw it seems to be a bit broken, maybe go into webdev a little bit after you finished the code for the VM exploits?