The parent and grandparent were talking about unilaterally developed tech, "At the end of the day all it would take is one of the 3 major browser vendors to off

The parent and grandparent were talking about unilaterally developed tech, "At the end of the day all it would take is one of the 3 major browser vendors to offer an alternative." etc The correct comparison there is Dart. WebAssembly is a joint effort being developed by a team comprised of folks from every major browser vendor, so it isn't really an example of what they're talking about.