This seems quite an accusatory comment!
Taxpayer-funded TV stations aren’t showing major commercial sport in Australia or anywhere else, really.
If it’s not exclusive to pay television, it’s on free-to-air commercial networks. These are fully private companies that pay a large license fee to use spectrum, and fund their purchase of the sports broadcasting rights by selling advertising (usually at peak rates as these events are very popular).
In Australia, all four of the Grand Slam tennis tournaments are shown on free-to-air commercial TV. No taxpayer funding whatsoever but easily accessible to everyone.