Given that Mozilla has done tons of WASM work, and that one of the earliest implementors was Rust, comparing WASM to Oracle's iron fist over the JVM doesn't seem to jive with reality...
I count 18 people from Google, and only one from Mozilla. The second largest representation is from Microsoft (8 people), but their input is now Chrome/Chromium input.
Still doesn't compare to the Sun God and his silicon fist.
(With apologies to Steve Yegge.)