What they offered was nothing, they only promised high tps blockchain without actually demonstrating that it has the claimed capacity while also remaining decentralized. And of course the developers never had interest in delivering, they already got filthy rich from their premine.

If there was a coin that had better scalability than Bitcoin without any downsides, it would have been still alive today at at least $2 or #3 spot and slowly replacing Bitcoin. But there is no such coin.