Maybe they failed because their PR activities are very weak and they failed to attract community with the updates they are providing. Every member who involved in bounty campaign will not receive any coin because they didn't achieve their soft cap.
This STO doesn't have a really strong vision and STO is no a trend. People are more interested to put their money in ICO or IEO. STO is a very bad choice consider almost all of STO are craps. The team must change its vision and try to create at least MVP. It may give more demand to the future project that will be created by the same team who is running stellero right now.