One big lesson I learned early in my career is that key to success for most products is to just make it work.
Whatsapp was whatsapp because if you send a message on whatsapp, it would reach.
Zoom became Zoom because the video adjusted to slower speeds and broken connections
Clubhouse is doing good because you can almost talk real time(Kudos to their Audio API provider Agora)
Being best at the most important promise you make to the user is the key element, rest all is bells and whistles
If you are a startup and your USP is simply a few additional features that your competition does not provide, it will give you PR, but perhaps not sticky users.
And you want to eventually own your USP and not use off the shelf commoditised provider. I won’t be surprised if Clubhouse eventually invested in or acquired a voice API company
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Validating your product hypothesis with a fake door : Here I talk about how you can quickly test out a hypothesis or validate a new market