Selling services is the least captial intensive way to start a business... just check out the ladies at Four Floors. High heel shoes... pink lipstick... tight dress...minimum investment in a service oriented business.
You need to differentiate between startup up expense and start up capital expenditure. Buying a PC, biz cards, a mailing list, etc are all expenses. Building out a restaurant, a manufacturing plant, or a retail establishment is a capital expenditure.
You will always have start up expense... as noted by my example above.
