I think you bring up a very valed point. I have seen great project that didn’t continue or been cancelled by the company due to other periority projects. How ever this periority project sometimes is not the best and may be the ones are better ideas. How ever companies always look for what is the market needs and what will bring more profet. To your point about resources problem to keep the project going. I think this is a project managment problem. As it is the resposabty of project management team to alocate and secure the budget as well as resources for the project. But as I mentioned sometime companies only care about the volume of the project and how much profet they are making. which is not the most ethical way to take a business decision.