Final answer:
DrawQuest failed primarily because the founders did not effectively manage the business aspect of their venture, lacking a solid strategy for sustainability and growth.
Step-by-step explanation:
The main reason DrawQuest failed according to the chapter feature was that the founders never figured out the business side of the venture. This is a common pitfall for many startup firms which may have innovative ideas or gain initial user attention but lack a viable business model or a clear strategy for monetizing their product or service. While obtaining investment capital is crucial, the long-term sustainability of a business relies on effective management, understanding customer preferences, and adapting to the competitive landscape, which includes recognizing close substitutes.