Why do some store policies restrict taking photos and video cameras?

Answer 1

Because it is private property and they have the right, as well as their customers, to a reasonable expectation of privacy.

Answer 2

One of the main reasons is to prevent shoplifters from scoping the store out and recording it to review before hitting the store. Next they know that most people don't want to be recorded on video. Thus they prohibit it both out of concern for themself, and for the customer that might not want to appear.

Answer 3

if you are taking pictures of their supermarket or bank, you could be documenting the layout in order to help plan a robbery.

Answer 4

because they are afraid of being sued or getting bad publicity.