Thanks for taking the time to respond. I took a quick look at what you linked. These are indeed great features and for me as an individual they would be more than enough.
But most people that use zoom or teams do it for work or school so that means integration with outlook, gmai/gmail-calendar and such. The reason is, people need to be able to send out meeting invites natively in the tool but also work with whatever calendar solution people are using to schedule meetings.being able to limit access and record calls (and share recordings) are vital. I couldn't tell if these things are supported already but having those features in my opinion will help the product get adoption.
Also, personally, I liked being able to chat someone and in the same context share a screen and if I want upgrade that to a full videocall in Teams. Element via Matrix can already do that and is opensource.
I wish you success with this product, I prefer solutions like this myself than be at thr mercy of zoom and MS.