Freedom of working for yourself is also freedom to fail. It really isn't freedom. It isn't slavery either. It is responsibility for everything. Everything including all the things you have thought about and twice as many tasks you haven't.
Work space, equipment, supplies, cleaning, paperwork, maintenance, errands, advertising, accounting, billing, tax liability( both sales and labor), taxes on the personal property acquired to do business , self employment tax rates, insurance, utilities, vendors, the replacement cost of anything used, and probably more I forgot all cost you money before you ever profit a dime. All the above apply to any line of work. Not just manufacturing or services considered blue collar. Even a desk, computer, and home office require most of the items listed.