I would expect privacy on a library computer, or an internet cafe, but a computer given by a company is dedicated to work and work only, unless specified explicitly otherwise (as in given fully as a gift). Letting people run unknown software on a company computer could lead to malware attacks and data breaches, so companies that give its employees computers will manage how they're handled with an IT team.

Yea, she was asking for it wearing that and all... /s

The difference is between doing it secretly or in the open.

I assume I'm monitored on my work computer, but me and my company both know they aren't supposed to.

When they admit it and make you look them in the eye and consent to it, that's when the social contract unravels in a big way.

There's a line from a great comedy in which an oligarch is berating his son for playing elaborate games to ruin the life of a schlub who once disrespected him, right after we see the oligarch at a party where people are shitting on glass coffee tables with prostitutes under them. The son says, "How is it any different from what you do?!?" And the dad says, in a posh Oxford accent, "The glass, son. The glass."