I bet that various niche paid software may have access controls like that.

It should not be very hard to write though, given that processes have predictable names, and executables have predictable signatures. Replacing the executable until the next time slot comes would additionally help.

Deploy a rootkit to make certain that the user cannot get rid of this software.

It might be easier and cheaper to have a dedicated device for that special thing, kept under a lock and key. Maybe the very insanity of such a setup would help reason overcome the addiction.