> Even if Mozilla had the will, they really don't have any way to contribute very significantly to the development effort, because it sort of requires a lot of very talented people getting paid large sums of money for long periods of time... which is obviously something that Google can afford to do.

And implementing a modern JS engine isn't? Or developing Rust? Come on.

The objections that many other browser vendors have to integrating PNaCl into the Web platform have been detailed repeatedly and have nothing to do with "X browser vendor doesn't have the talent on staff to implement the technology".