I disagree completely that employees and employers can't choose whether they are contractors. It's almost always better for companies to hire contractors, that'

I disagree completely that employees and employers can't choose whether they are contractors. It's almost always better for companies to hire contractors, that's why they work really hard to structure it that way (see uber). Employees are more mixed in their preferences, but in my long career as a dev I've seen that being an employee is better than being a contractor.