We have that capability but dont really have the time or need for it. having said that, it only takes one rouge employee to mess it up for everyone else.
I'm not on the IT team but have elevated permissions. I can dial into any of my subordinates computers "invisibility" I might add, and watch their screen. I can copy data remotely. It'll take me a few minutes to grab an image of their computer "for backup" reasons, restore it on another computer, and then safely view their history.
By invisibility, I still leave log traces on their computer.
I'm not going to, because wtf. But I totally do have that power.