In practice, the client has zero friction in firing you (legally or from HR). Especially if contractors are working remotely, firing one is as simple as filing

In practice, the client has zero friction in firing you (legally or from HR). Especially if contractors are working remotely, firing one is as simple as filing an IT ticket to cut off privileges/pay. As a worker you get none of the tax benefits or freedom of contracting, and you're even more disposable than a normal employee.