The unique and important aspect of any web based solo information business operator is the fact that he/she can deliver personal knowledge, skills, or experience to targeted customers over the Internet and get paid to do so!
Since everyone's knowledge and experience is unique, one-of-a-kind, and personal, your business cannot be duplicated (at least legally) by anyone!
Now it may not have occurred to you that if you adopt this business model, you have chosen to set yourself up as an expert in your field.
Even though you may deny you want that role, or won't ever admit to assuming such, you will be perceived as an expert by your audience. They are coming to you, money in hand, seeking the information you distribute.
If you choose to become such an entrepreneur, regardless of the subject of your business, you are putting on a robe of authority, so to speak, and acknowledging that you are a legitimate source of valuable information - the type of information that your client wants and is willing to pay for.
Think about that for a moment . . .