The Brumbies, and all Australian Super Rugby sides, crowds and support have been on a consistent downward trend since the mid-to-late 00s. 20 years ago the Brums were regularly pulling crowds around 20k, 10 years ago crowds in the low teens, now well under 10k.You definitely have better insight to the rugby codes than me, but it's an interesting intersection of Brumbies crowds dropping at the same time the Raiders rose. But correlation doesn't equal causation.
Aside from one offs and short periods, each with their individual explanations, the Raiders crowds have consistently sat around 10-13k since 1990. There's been a jump in general support since 2016, 2019, and post covid to a lesser extent, but a bit of success after decades of mediocrity will do that.
In other words I'm not even seeing the correlation, and I see no reason why people with an interest in both codes wouldn't support both to varying degrees throughout that period.




