If NSX does well, it bodes well for ISX.
Going by the share price action this week, it's obvious investors are noticing.
And with a lot more scrutiny over ASIC now, I'm sure they'll want to be seen as 'regulating' ASX in their decisions, as opposed to 'collaborating' with them as was mostly the case with ISX.
All in all, good times lie ahead for ISX.