The average for Perth's 73 games on 9Gem in 2023 was 8k. That's an aggregate of 584k over the season. In order for a Perth-based team to increase the average to 18k it would need to generate an aggregate of 1.314m. If all of Perth's home games are played at 6pm Sun AEST then that means Perth could feature in 12 FTA games at most. Those 12 games would need to generate 730,000 extra viewers in Perth at an average of 60,833 per game. The average AwFuL game in Perth drew just 56k: Eagles 74k; Dockers 69k; non-Perth teams 45k.
You're f**ked in the head if you think that's possible.
In all likelihood, Perth would get 5-8 games on FTA.