At my current workplace (10M+ DAUs), all we want to do was render composed strings from the backend to a browser using Typescript. Since Node 0.x (went I started with Node), things have changed, freedoms taken away and now security teams recommend to wrap your Node server instance with a sidecar or else your Node project will be blocked. SnapFire FSR changes that for us, no more sidecars.
The idea is, you don't need a general purpose VM to compose a web page. Most complex transformations and communications are done by our services anyway. When you need complex computation done without a service then create native Rust functions and call it via Typescript.
There is a long list of ideas from my past experience with frontend and backend that contributed to SnapFire FSR. In the end, FSR answers my question "Can we specialize our web applications to our full stack needs and security concerns?"