You hit the nail on the head. It is all about demand. In 2004 I noticed how poorly other health care agencies were operating and how dissatisfied their clientele was. I began my business in December of 2004 and it was wildly successful. Beyond my dreams. I sold the business this year and am now a happily retired 29 year old.
I am attempting to do the same thing with my blog. I noticed a need on the Internet for basic psychic information and tutorials so I created the blog to fill that need.