Why would you believe that?
Here's what's for sale:
1. A WNBL team that loses money even when the belt is tightened as far as it can go.
2. An NBL team that doesn't make money now, probably won't make money this year, and might make money in the future, maybe, perhaps, possibly.
3. A purpose-built venue due for $1m+ in maintenance costs, on council-owned, contaminated land with very heavy restrictions on what it can and cannot be used for, plus impacted by a government looking to protect its interest in the Entertainment Centre from rivals by adding more restrictions (this point IMO is absolutely critical).
Given #3, the best sale option for the government is preferencing the combined purchase of all three. Yes, there are potential crossover promotions for a football club running a basketball team but it's not either of the club's core business - either of them could, for far less, buy an NBL license ($1m or less), create a new brand with their existing strength in the media and through membership, and play it out of the Entertainment Centre, all without having to touch the Lightning, the Dome, or pay for the Sixers' goodwill (not $1m or less!).