I am excited to write some Rust in the browser, and have been tinkering with what it might look to have a rust frontend framework with ergonomics comparable to what you might expect in other high level languages. (https://anowell.github.io/quasar/)

That said, I agree that more people will want to work in higher level languages, though I kinda suspect "most" are going to still prefer Javascript for the forseeable future - so I sorta see JS compiling to WASM as inevitable.