No, it is for general use and especially not made as MS Teams replacement only etc. For that purpose there are other solutions as AnyDesk. Matrix wants to build an infrastructure for everything from secure IoT over fully replacement of Discord for everyone and organizations (just without the gaming tag and gamification gimmicks to make you pay money) to secure intranets. And everything decentralized. The chat program is not even the core project here, the vision is larger.
However, the public Matrix home server costs a majority of donations and public servers are for people like us, who want an easy start. Organizations do not need such, because they host their own servers. That alone tells that you are wrong about this point. And it is a good reason to spend 1-2 Euro or Dollar per month.
Moreover, with Element Calls they want to create a service where people can stream everything in as high bandwidth as available on there home network (if you have not enough bandwidth, 4k streaming would not even be possible on Discord). They will route every stream peer to peer to make the streaming scalable as much as technical possible.