Good to see you have an interest in the land based great outdoors as well as the water ones, TS.
Well, what more can I say!
It's been said so succinctly by burglar and medicowallet. But since it's a very important issue I'll repeat my comment from the property thread.
On the issue of arable land... step out of thinking from an Aus perspective and consider why the rest of the world is wanting us to relax our foreign investment and ownership rules for land in particular... land banking and profiteering mainly from urban land development and a food production source they can't do in their own country from rural land. They then bring in their own workers to work the land and process the goods and the problems for Aus economy escalate from there. They effectively supplement the needs of their own economy with an effective sequestration of part of our land for their own exclusive use.
Again not against foreign investment per se, but the slogan that they can't take away the land is dumb. They take away the productive output from the land and tend to strip the land bare of nutrition before divesting it back to local ownership... like Rupert Murdock became famous for stripping the guts out of businesses and flogging them off as a hollow shell that was devoid of real worth.
We just need better controls of foreign investment of land and key infrastructure.
It's true that more farms are company owned, but the company is still family owned in most cases. It is still their livelihood and one of the few things we have going for us... to produce all our own food and dig up minerals.
You don't have to have much imagination to see the trouble ahead if too much of our key strengths are eroded away by foreign ownership. Mines close up for a rainy day or until overseas owners can import cheaper labor, the same for good residential and arable farm land.