The answer to this will be more parasitism: Palladium is a means of infesting the commons with hostile digital fauna. As these new services and applications become more plentiful, the need for the Linux desktop to deal with them according to Redmond spec will increase as well.
Kernel hackers will have their hands full figuring that one out. How do you make Linux interface with a security chip in such a way that untrusted applications are sandboxed without taking root away from the machine's owner? I think the answer is, 'you can't,' and I imagine Redmond thinks so too. And what will Palladium mean to application development? More overhead, that's what. Certification authorities charge for their services. Some applications in development may have to be scrapped due to the costs of certification.