Well you've just crossed completely into fantasyland.
The WA gov aren't looking into ownership of a club, they're deciding which bid to endorse.
The Bears have only had initial discussions with the WA gov, and those were about what subsidies the WA gov would offer the Bears to base a team in WA. In other words, as things stand, the Bears would be 100% owners of that team, it'd just be based in Perth and play some percentage of games at HBF.
When people discuss the possibility of the Bears splitting ownership in Perth they're discussing the possibility of a merger between them and a consortium, in this case from Perth. Though it's possible that could happen, and it's only a matter of time before those discussions are had IMO, those discussions haven't happened yet as far as we know publicly.
The Bears have also stated that though they're open to any opportunity, they won't agree to any partnership or deal that doesn't meet those non-negotiables, and they're going to present a bid regardless of whether or not they have a partner or endorsement.
Well then they're not going to agree to merge with any entity from those markets because they'll never, ever, move on that one after what happened in the Northern Eagles fiasco.
Not to matter though, because they don't need a partner to bid anywhere they like, and their plan A for this expansion round has always been to go it alone anyway. They'll ask the NRL where they want them to be, PVL will tell them, they'll base their bid in that location, and odds are they'll win the license no matter the quality of the competition.