It is like Zello but has a nicer UI, less users (165 million on Zello) and VC funded (Zello is bootstrapped).
With Facebook and Twitter attempting to copy and release their own Clubhouse competitors, I don't see how Clubhouse can survive as is with the invite only system when their competitors can easily copy them to bankruptcy.
Maybe if Clubhouse went all-in on being a virtual gated community where you had to pay for access and the subscription fee was high enough to not only cover expenses but provide a sense of exclusivity. If all of the hoi-polloi are using Facebook's version of Clubhouse, there might be value in the original Clubhouse if using it means not having to be around working-class schmucks like me.
Funny but same could have been said about Facebook or Gmail back in 2004. May be the invite only system is not a bad way to start. Just a thought.