Because I don't really want to penalize a company for bringing in foreign labor. If a company can't find someone for a specific job or role then I don't care if they go abroad to find that person.
What I care about is the current system isn't being used to find hard to find labor, it's used to bring in cheap labor in an abusive situation.
We as a nation are really better off if we bring in the best in the world to work here with a cushy salary.