Enabling DRM in the kernel?

They can expect enormous lawsuits if they try, so, probably not. Also it
would be insane from a security POV: if Intel can brick your CPU, one
crack into the location where Intel stores their keys and crackers can
brick all such CPUs. (Wherever the keys were stored would be a high-value
target and might last as long as days before being cracked wide open. If
need be a bit of custom theft would be carried out: criminal organizations
would love this data.)

As Intel aren't insane, I doubt they'll ever implement such a hardware
kill bit in their CPUs or chipsets. Even if they somehow escaped lawsuits
it would be an absolute PR disaster.