For you to be highly successful at any venture you must anticipate the needs of your prospective customers or clients and offer them the solutions they seek. Being armed with such foresight gives you an edge over your competitors. The market could be saturated, there might hundreds of other similar business which sell the same goods or services but you need to go a level lower, find out what the other businesses don't offer their customers, build your business around that and you'll most likely end up being very successful. An example: if customers for example seek cheaper electronics why not sell them used electronics which are still in great condition? Where would they buy their electronics?