Back in 2017 it wasn't that common yet. I think Yondr is a great solution for comedians, but can also totally see that it wouldn't have made it into terms and conditions yet. I don't think you can guarantee anything in this case unless you have the actual T&C from that particular show.
I disagree with your statement about the comedians, unless you're talking about a full length recording that is being sold on. But for those people, you go after them in the courts for piracy after the fact.
Most of the bits captured are/will be out of context and useless. My personal desire to "record" is short "i'm here" clips or pictures. (Music productions, clips, photo for the show) TM claimed "there was nothing extra" on the ticket. (I contacted them but did not try to pull a refund as that I know that TM is going to pull the "well this is the venues' issue")
> Most of the bits captured are/will be out of context and useless.
Actual history shows the opposite. The entire reason for Yondr is precisely because people were posting bits that comedians were trying out, and then people were jumping on "so-and-so told an offensive joke!" on Twitter and it becomes a whole thing. Comedians are terrified of getting "cancelled" because they tried wording their joke a different way to see what the audience reaction would be.
If people were just recording "I'm here" clips then Yondr would never have existed.