Is it what taking so long for ICONOMI to built?
How is this different from what we as a traders already do at exchange?
1. Figuring out perfect user experience
2. Security
3. Scalability
4. Testing
5. Stability
much more...
Building a UI is not what takes most of the time!
Also I doubt that those exchanges were built in just 4 month. Ok, maybe some of them with low volume