have you read https://ploum.net/2023-06-23-how-to-kill-decentralised-networks.html? If/when you read it, I would be curious on how it changed your view in the topic. Or why it didn't.
The fediverse is a tool of freedom, morals, ethics, for those that want to be connected, something that no commercial entity will offer. And it’s ok for it to not grow at all costs, or be the widespread available platform. It just needs to be present and faithful to itself.
it's complex to make dozens of technologies work together under an umbrella (Matrix). Particularly when those technologies have a vetted interest in not being interoperable.
There are companies that provide an offering with Matrix, e.g https://www.beeper.com