Developers always plan a lot, overestimate their abilities and in the future they can not complete the project to the end. On the other hand, if the marketing campaign was poorly organized, then only few people invest money and there is no money to develop the project 
Even if they will plan a lot for their success in the project, but their concept was worthless, I sad to say that this will never go through. Because right now, people needs projects that can be more useful.