If your research really does determine that there is some amazing market niche that until now has miraculously gone unnoticed and unserved---dog owners who wish to help their dogs lose weight naturally, for example---sooner or later, word is going to get out that there's money to be made there, and someone is going to create a better ebook or info course or product that serves that market's needs better than yours does, and who markets it better to them than you do. You can't manage this competition while sipping margaritas all day from your paradise restaurant on Fiji. You'll soon see your market share go down the drain---just like all those Açai cleanses. . .
If you have specialized knowledge in a certain topic, you can put together an online course to teach others. For example, if you have experience in real estate investing, you can create an online course “Real Estate Investing 101”. The benefit of an online course is that once you create the course material, you can sell it to as many people as you want.