> “While obviously C/C++ and Rust came to the ecosystem early on, other languages seemed to slowly put a ‘toe in the water’, first having limited support and then gradually investing more as usage takes off.”

This is the biggest limitation for me. I like WASM fine, but anytime I want to use it I have to turn back to Rust. I like Rust fine, but without support in other languages, it's not necessarily worth diving into.