Business was booming. What they wanted in the past is irrelevant. Targeted timing is everything. Trying to coast on an old idea is like trying to sell ice cream in the middle of winter. Don't try to squeeze a segment of the Internet population into a concept to which you are emotionally attached.
Business has no feelings.
It runs purely on logic. If something isn't working, scrap it and try something else. Those who have been successful online so far have learned how to adapt and change their thinking on a moment's notice if need be. The challenge is in finding something that is or will be in great demand. This is where the work lies.