It's what I call "mental masturbation", when you engage is some pointless intellectual exercise that has no possible meaning. - Linus Torvalds

I don't doubt at all that virtualization is useful in some areas. What I doubt rather strongly is that it will ever have the kind of impact that the people involved in virtualization want it to have.

I am a lazy person, which is why I like open source, for other people to do work for me.

For example, the GPLv2 in no way limits your use of the software. If you're a mad scientist, you can use GPLv2'd software for your evil plans to take over the world ("Sharks with lasers on their heads!!"), and the GPLv2 just says that you have to give source code back. And that's OK by me. I like sharks with lasers. I just want the mad scientists of the world to pay me back in kind. I made source code available to them, they have to make their changes to it available to me. After that, they can fry me with their shark-mounted lasers all they want.