Depends on your tolerance for shaming. I, for one, would probably be a bit pissed off if someone threaten to publish video of me jerking off, but wouldn't care about that enough to pay anyone any money. Listening to a secret conversations in conference room on the other hand, than can be valuable on it's own, no need to blackmail.

Honestly, unless you're cheating on your SO, society is growing increasingly tolerant/indifferent of most of the other things you could see on a webcam

How many people are doing something that is worth the time to blackmail in front of a camera and have the means to pay a substantial sum of money compared to the value of corporate secrets?

Also what are the chances that a microphone wouldn’t overhear something incriminating even if the camera were covered in your bedroom?

And I am really not trying to go down the road of wondering if you are doing something incriminating in your bedroom and your partner is being completely silent what that implies.....