Do they actually have those powers? They can make recommendations, sure, but I don't think they can actually force anyone's hand.
All this will end in, IMO, is a damning report which the ARU will dispute. It will fuel the anger of those in the West but in the end amount to nothing, because like a lot of things in Senate committees, the power to force actual change is very limited.
.
There is a general rule of thumb in government that they don't like business profiting or lining the pockets of private individuals from government funds for nothing and they don't like "public" monies going O/S to benefit other non- Australian entities without being controlled and approved. So if you look at the rules imposed around resources, property ownerships. Funds transfers ( international banking) to name a few they can and have dictated terms and conditions.
So out of the hearings yesterday you would note that the question about the SANZAAR board arrangements was clarified for a reason so was all the SANZAAR deals. Then did you notice the private entity involvement was questioned in particular where the $6Mil to Cox went.
It very conceivable that the report will recomend further reviews and action around the funding and governance Ti ensure the public funding goes to the amateur levels in Australia, not the professional levels, no government funding can be used for offshore deals (like Super Rugby) and governance changes and accountabilities including transparent reporting is mandated as part if it. All of this they can do.
If they do this or similar it will force the hand of all state and territory governments to follow suit to a degree.
It will be interesting if they think Twiggy group deserve some government support and if so (especially to help wa rugby) they won't want the ARU to deal with funding. So again it will force change.
The key fall out is not private entity will want to be involved while all this is in play.
I would guess the for the next session all the lawyers will have warned their clients that the only protection available is public interest immunity and it will be tested as public monies ate involved.