another way of putting it would be that your new boss is/are your clients so yes it is another form fo employment in the guise of self employment. True freedom would be when you can take yourself out of the picture and still earn income.
In this case the "boss" is the cash cow and keeping it alive; also maintaining marketable skills incase the thing dies.
Having too much time and money on your hands can also pose certain social and mental health challenges. It seems everyone has a job whether they like it or not.