It's also just plain ridiculous. This would mean that most jobs are created by... sole proprietorships? If you're employed it's almost certainly by an LLC, LLP,

It's also just plain ridiculous. This would mean that most jobs are created by... sole proprietorships? If you're employed it's almost certainly by an LLC, LLP, 501(c)3, etc. These are corporations. The simple act of training an employee is itself investment. If you suddenly make the profit of this new hire less valuable, we're expected to believe that this won't mean a reduction in new hires, even at the margin?