Here is why: Because it has no use. Steem/sbd dollars must be the only coins used for something. Too risky to use as a store of value.
You are not going to use crypto to buy anything, where would you use ETH XRP etc etc? Just to speculate, not even bitcoin, because you have way simpler payment methods like, CREDIT CARds lmao.
Its up to the several houses to come up with platforms where their tokens can be used. There are huge oportunities in glambling and online gaming, maybe some diferent apps could incorporate something like that.