Whats wrong with Zee Dominating? Star is dominating 5 markets(including Hindi). So atleast 2 for Zee is fair
If CK shut down then viewership split between Star & Zee (Not only with Zee). But co existing Suvarna & CK may be work, I don't know.
Selling Colors brand is better than stunting it for Star.
But its less chance to ETV's re-entry to pan India markets. And I don't know Vistara able to afford a bigger network of channels.