no they got it by some guy saying "I'm rich, have all my money" then the population and market for it to be sustainable (which is still isn't, but it has the potential to be one day). We have none of those.
Rugby can't even sustain a national league without pouring a crapload of money into it every year, its a black hole.
With their limited resources NZF are better off using the ASBP as a stepping stone for players to go on to bigger things, the nix provide a pro team that are looking at these players almost week in week out as a further stepping stone.
It'd also be completely inefficient to get rid of that just for welnix to pay ASBP players an extra $6000 per week. That would do NOTHING for the game here.
The nix also get 6000+ to football every fortnight, some of those may decide to play football on the back of that, some may go along and check out the national league. They've bought EPL teams to NZ and put football on the front and back pages. There are many intangible benefits the nix bring too.
There is also the small point that welnix wouldn't want to pour money down a black hole. They don't even want to be pouring money into the nix long term and hope it will become at least close to self sustaining, so why would they want to lose money on the ASBP each year for little benefit? Paying ASBP players an extra $6000 each would not magically bring in revenues, so they would lose money each year.