All of the environments you describe there sound to me like they would benefit from web apps that become responsive after an initial page load of less than 100KB, followed by ~10KB round trips to the server to fetch additional data.
As opposed to the >2MB initial page loads that have become so common with heavy React SPAs in exchange for the theoretical benefits of avoiding more page loads for further interactions.
Any app with dynamic data would still need to make some sort of HTTP request before rendering some view with that new data. I don’t really get your point.
As opposed to the >2MB initial page loads that have become so common with heavy React SPAs in exchange for the theoretical benefits of avoiding more page loads for further interactions.