Note that less than 5% of venture capital goes to early stages of companies that is those taking the risk to develop innovative products. Usually venture capital follows innovation, these capitalists seek companies that are already with working capital, products and business models. They come with their money and most times their management style and sometimes a few people to compliment the exixsting team and drive the company to the heights they wish. Venture capital does not stimulate innovation it waits and wants in once the venture looks to be profitable or has picked direction - they invest their money by buying stock, push their agenda and push towards an IPO, recoup their investment, retain their shareholding and claim credit for the success of the venture into perpetuity.
Now about that idea, critique the idea, look for buddies who share in the entrepreneur spirit, attack it in increments depending on how much capital you can raise, use the dinner table as your office, maybe use your backyard as the operations area and explore opportunities. Down the road your will bump into these capiatalists and they will make the idea explode - na hapo umefika, Don't give up!