The challenges are attaining the price points that allow for margins to expand or atleast facilitate growth. A lot of small business have terrible sources for the concept to work. When you hear of businesses failing, its not because they cannot cultivate opportunistic events, it is that the opportunity itself is limited. The small business isn't trying to monopolize the solution, it's competition can usually piece apart what made the concept work in the first place. These are a few challenges I have come across. Competition, incomplete solution, margins that have little or no room for growth.