The more people knows about project the more popular it becomes. For every project it is very important to have a big and developed ecosystem and a lot of users that will use the project for a long time in the future that project will be popular and in demand for a long time.
Promotion - promotion and more promotion is neccessary that more people will know more about project and its prospectives.
Cryptocurrency projects depends too much from the cryptocurrency market. Cryptocurrency depends too much on market conditions and this market depends too much on the economic and politics. This market is too difficult and unpredictable too.