[azakai]

> 86 and ARM is where its currently at, like it or not.

The important word is currently. As the GP said, 10 years ago "archs where its currently at" would not include ARM, and the ARM success on phones and tablets would have been impossible, because they wouldn't have been able to run the web, if the web used Native Client!

10 years from now, we could have entirely new architectures, and if we lock the web into the currently popular ones, we might miss out on those.