Hmmm, sorry about that... looks like I completely misunderstood that case. Is there truly no right to privacy in public in the US? You can just be recorded by anyone as soon as you step off private property? That's super not cool.
It looks like Californians have rights to not be recorded without permission for commercial use, otherwise they're fair game.
Of course, states have their own laws regarding that.
My understanding is that if a person can see what you are doing in public then a camera also should be able to see what you are doing. If a person can see what you are doing in public then it is a reasonable expectation that you do not have privacy in that manner.
Could that be changed? Probably. For example, it is illegal to record people in public in France.