What are some of the reasons preventing cryptocurrency from being more successful as a medium of payment?
The reason behind it is simple, it is a new player in cryptocurrency world. New tokens or coins cannot cope up with bitcoin or other altcoins out there in terms of features, this will also depend on the development team on how they will handle the platform itself especially the implementation of its features. But for now, bitcoin is the widely used as medium of payment as well as other altcoin like Etherium or Litecoins.