First of all, they'd need someone else to copy wouldn't they? None of the others work.

Second, the ownership and distribution of this thing has been tracked in detail. VX2 is currently being developed by a marketing company in New York with 100 employees and backed by millions in venture capital from well known technology venture capital firms.

The distribution of the current version has been tracked through a number of servers that hand off to each other, including one in Russia (just a relay) and ends up in Canada under the ownership of a couple of Canadians well known for Internet scum.

No, Microsoft's anti-spyware is a move of desperation. By some counts they've already lost 30% of the browser market to FireFox. The main reason is spyware/adware/malware. With the failure of Passport and now this, their plans to own the Internet are crumbling. They have to stop the browser erosion or they won't get the chance to try again.