Does anyone even look at them? I just assume most video gets recorded and then recorded over or somehow discarded.
Outside of situations like say an airport or casino I doubt anyone is actively watching most of the cameras unless something happens after the fact.
I also have two separate family members that have businesses with cameras, and they both look at what's going from an app on their iPads while they watch TV in the evening (actually, having seen them do it is probably why I know videos at businesses are not handled properly).
Also, what difference would that make? I already know I'm being filmed, the problem is that there is no control over how that video is used.
Which does not mean that there isn't a Law (in Italy) mandating it.
[Italian] Articolo 13 del Decreto Legislativo n.196/2003 e Videosorveglianza - Provvedimento generale - 29 aprile 2004:
http://www.garanteprivacy.it/web/guest/home/docweb/-/docweb-... [/Italian]
In a nutshell: http://www.garanteprivacy.it/Garante-Home-theme/images/origi...
Surely it makes no difference whatsoever.