Is it really unreasonable to explain that nothing you do on a work computer is private, though?
Obviously you don't want to do any of that. But if you have a reasonable set up, you can when you need to, and telling people not to do shit they shouldn't on company hardware is a good thing.
At most I could see it being a kind of novelty for stuff like movie theaters to add to the immersion. And the obvious ads bullshit.