[tgraf]

If you are in a position where you can do that then great. Most folks out there are in a position where they need to run arbitrary applications delivered by vendors without an ability to modify them.

The second aspect is that this can get extremely expensive if your applications are written in a wide number of language frameworks. That's obviously different at Google where the number of languages can be restricted and standardized.

But even then, you could also link a TCP library into your app. Why don't you?