>> moving to a model of "signed software from power on to application level" for Windows. This already a thing with Windows 10 in S Mode. So definitely not tha

>> moving to a model of "signed software from power on to application level" for Windows. This already a thing with Windows 10 in S Mode. So definitely not that. There are quite a few CPUs that implement the necessary TPM crap and aren't supported. So not that. There are several new CPU features they want, but half or 3/4s of the CPUs on the supported list don't have them. So not that either. Only valid reason left is that's arbitrary and not based on anything logical.