I think that the dev team doesn't want to list Starta on more exchanges, due to future buy back processes - less exchanges is easier, more exchanges - more work and complications.
It could be but I'm not sure if that's the reason. I think they are aware that investors want new exchanges. And if the reason is making simplier the buyback process, it's not good.
To be honest i don't see other logical reason..

Anyway, it looks like we have price breakdown, today - 30% .. investors lose hope and patience ..