I'm also skeptical about the proprietary client, I would have kind of thought that having a good Matrix client was more important than the bridges; I almost would have preferred to see the client Open and the bridges properietary.

But that is a very convincing comment that kind of sells me on the idea, and it matches what I've seen in other places. Cross platform play on consoles, region locking, etc... once you get enough momentum that something becomes a selling point, it becomes a lot harder for the overall ecosystem to ignore it.

So yeah, the argument you raise makes me feel a lot more positive about the service.