You're missing the entire point of a free labour market system. If there are 10000 jobs for "position x" and only 8000 citizens who qualify, then companies are

You're missing the entire point of a free labour market system. If there are 10000 jobs for "position x" and only 8000 citizens who qualify, then companies are forced to compete with each other to attract those workers. Usually by paying higher wages. Or companies are forced to train people to get qualified workers. Can't do either? Then shut down your business and retire in eternal shame for being a worthless failure. That's the entire idea, that's what a nation is built for. A "shortage" of workers is exactly the desired result in a healthy free market nation.