When looking at history, it is usually not the best technology that wins. The one that wins is the one that provides the most value to users. Dash is focused on mainstream adoption and its governance structure can pivot according to market needs, which includes technology improvements. In the future, it won't be up to the crypto specialists to decide which coin goes mainstream. It will be up to my mom.
Each coin community will have different offerings, so it's not a monocultural idea. Ethereum has its own use cases, so does Dash. Leadership becomes the most important aspect of these communities because without good solid leadership, communities, and along with it, funding dies out.