No, it says that nobody even considered that she might steal, because rich people don't see the point of stealing when stuff is so cheap relative to their wealth that it's effectively free.
That's why nobody bothered to even escort her, stealing just didn't even occur to them at all.
And the second option is exactly what happened in an office I worked on, at some point enough people complained that their macbook was stolen and they installed cameras.
Funny thing in the same office my lunch was stolen once a week and that just became a joke during stand-ups "did they stole your lunch today?"
The macbooks were handled by the IT department, everyone was just using them, so I don't know if such a function was enabled, the only security measures I know there were are remote login and disk encryption.
I don't know what the person that stole the macbooks did with them, but because he/she stole more than one I believe he/she was able to make a profit