I think the core issue as to why employeeship is favored is that those folks that want the freedom of contracting have more personal power and are less disadvantaged compared to the employer. If you are choosing to favor the flexibility of your own hours over other work benefits then you have a much more secure source of income than a lot of working Americans. I think that ensuring that those poorest off have the ability to keep themselves above water is vital - and while I think everyone should be able to better control their work-life balance we live in a society where that isn't valued, so I'm not holding my breath.