Usually such a comment is a reference to a certain American media mogul who has tried to swing several recent elections and found themselves largely preaching to the choir with a very much reduced audience. But their miss rate is now exceedingly high: 2022 federal miss. 2022 SA miss. 2020 Qld miss. 2019 federal hit. 2018 Vic miss.

In fact, the people in charge in Australia are basically the voters. It upsets some people that Australian voters behaved basically the same as voters in every other democratic country in the post-1970s inflation and post-cold war liberal periods.

Mostly the people who go to elite schools - Oxford/cambridge etc, that's the training ground, for better or worse, children of old money, and those of new money, with a polite sprinkle of everyman. It's not a permanent group though, some enter, some leave over time, money is the driver though, and the desire to be in control.

A loud representation that you can see in action are the children of trump, even with all their obvious faults they have access to multi billion dollar deals that few average people see. Murdoch et al is their propaganda arm, if you have an agenda you'd like to be in the public sphere and have lots of money, then you can use these to move public opinion in that direction.