You don't really need a product to speak of either. A product is something you can touch, hold, feel, taste or smell. Let's take a food store or department store first. THEY DON'T, they have MANY products for sale. Now lets talk about a NON-Internet service company.
Lets take a house cleaning company.
You may be wondering why I went into ALL this NON-Internet business stuff. That is easy to answer. If you are going to turn a profit on the internet you need to think in NON-Internet terms. Now I know most people understand the concepts stated above. WELL gang, go figure, making a profit on the Internet is not much different then in a non-internet business.