Does Anybody know a crypto project that is really great but failed to materialize? I'd like to see one in your comment.
look for many successful ICO that raised large fund there are many of them failed and even stop the development they promise to create when they are just started.
Just look for old announcement thread of every project that started in 2018 to 2019 and you will find many failed project.
Any reasons why you are looking for it??