I don't know if you're making a tongue in cheek argument or not, but currently an enormous portion of the tech immigrants come to America to work as cogs in consulting companies or MegaCorporations.

And there isn't any precise way to pick the people who are going to start the next Google- except for the people who already run successful businesses and therefore have the money and influence to emigrate if they wanted to anyway.

So yes, it'd be cool to have all the Job Creators come to America so we could work in their companies, but I see no evidence that would happen.