Why didn’t you build it?
Audio online is nothing new.
Talks with subject matter experts is nothing new.
Social networking is nothing new.
Refer-a-friend schemes are nothing new.
And so on.
All the elements are already out there and have been so for a long time.
So why didn’t you come up with this idea, build it and reap the rewards?
That’s the really interesting 1B USD question about Clubhouse.