Or (back on topic) when I'm watching cable TV and they send an ad over the wire. There's no societal expectation that I watch that ad. I could hit the mute button. I could get up to take a piss or grab a beer. I could record the broadcast and watch it later, fast forwarding through the ads.
This is not like a store where there's a clear societal expectation that I don't go in and rob them. I don't think anyone would equate leaving the sofa during a commercial with robbery.