hmm interesting idea, and as others have stated if there is no available internets connection after say 24 hours any game would revert to a temporary non registered state.
also they should...
John Savill's Hyper-V Master Class
Join John Savill for 12 hours of comprehensive Hyper-V training. This master-level online training course will explore all the key aspects of a Hyper-V based virtualization environment covering both current capabilities in Windows Server 2012 R2 and looking at the future with Windows Server vNext.