I think the NRL needs to be aware of market saturation if contemplating adding anymore Queensland teams- It could well be considered that 4 QLD teams meets the current demand for the product.
If say 1 million watch NRL on a regular basis in Queensland week in week out -adding a 5th team won't likely result in an increase in 1 million watching NRL. - current demand for the product has already been met
It also limits the profitability and growth potential of the existing teams by adding more teams to a saturated market.
There would be folk who were Bronco Supporters including sponsors who will switch to the Dolphins in 2023 not withstanding what the NRL say that the Dolphins need to generate their own fan base , sponsors and juniors and not cannibalise the Bronco's
To add value to the broadcasting rights they need teams in new markets - i.e adding a second NZ team (Based on the South Island) in an expanding market and or Perth or even Adelaide in a untapped/new market.
Nobody watches NRL in Adelaide or Perth. They watch in Brisbane especially qldteams. Maximizing that audience will increase viewership