Dory,
The fact that the federal government has not assisted, either by mandate, or by widespread example and by forcing vendors to embrace hardware based security technology, should make one pause. For the sake of security the government can, and does, act quickly when necessary. Their lack of doing so in regards to TPM's leads one to question their resolve in this regard. While some agencies, NSA and the U.S. Army, may see a positive benefit from hardening the nation's computers' security, others (DOJ e.g. may not). I think there is an ongoing discussion on that level that is by no means resolved. Perhaps the Fed's will solve it by allowing backdoor entrance, much as the Chinese most certainly will. There's no question that important elements of government bureaucracy benefit from our lack of privacy.
JMHO,
Svenm