What makes you think it'll have better performance if it was rewritten as a native app? All the underlying code that handles audio and network communication is already built using fast C++/Rust code. This includes things like WebRTC, audio and video capture, compression, the WebAudio API, etc.
In products like Meet, JavaScript just acts as a glue language that sticks all these APIs together. All the heavy lifting is actually done by the browser, and modern browsers are some of the most efficient language runtimes humanity has ever built.
In products like Meet, JavaScript just acts as a glue language that sticks all these APIs together. All the heavy lifting is actually done by the browser, and modern browsers are some of the most efficient language runtimes humanity has ever built.